source: thirdparty/SZ/sz/src/sz_double_pwr.c @ 9ee2ce3

/**
 *  @file sz_double_pwr.c
 *  @author Sheng Di
 *  @date Aug, 2016
 *  @brief SZ_Init, Compression and Decompression functions
 * This file contains the compression/decompression functions related to point-wise relative errors
 *  (C) 2016 by Mathematics and Computer Science (MCS), Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "sz.h"
#include "CompressElement.h"
#include "DynamicByteArray.h"
#include "DynamicIntArray.h"
#include "TightDataPointStorageD.h"
#include "sz_double.h"
#include "sz_double_pwr.h"
#include "zlib.h"
#include "rw.h"
#include "utility.h"

void compute_segment_precisions_double_1D(double *oriData, size_t dataLength, double* pwrErrBound, unsigned char* pwrErrBoundBytes, double globalPrecision)
{
        size_t i = 0, j = 0, k = 0;
        double realPrecision = oriData[0]!=0?fabs(confparams_cpr->pw_relBoundRatio*oriData[0]):confparams_cpr->pw_relBoundRatio; 
        double approxPrecision;
        unsigned char realPrecBytes[8];
        double curPrecision;
        double curValue;
        double sum = 0;
        for(i=0;i<dataLength;i++)
        {
                curValue = oriData[i];
                if(i%confparams_cpr->segment_size==0&&i>0)
                {
                        //get two first bytes of the realPrecision
                        if(confparams_cpr->pwr_type==SZ_PWR_AVG_TYPE)
                        {
                                realPrecision = sum/confparams_cpr->segment_size;
                                sum = 0;                        
                        }
                        realPrecision *= confparams_cpr->pw_relBoundRatio;
                        if(confparams_cpr->errorBoundMode==ABS_AND_PW_REL||confparams_cpr->errorBoundMode==REL_AND_PW_REL)
                                realPrecision = realPrecision<globalPrecision?realPrecision:globalPrecision; 
                        else if(confparams_cpr->errorBoundMode==ABS_OR_PW_REL||confparams_cpr->errorBoundMode==REL_OR_PW_REL)
                                realPrecision = realPrecision<globalPrecision?globalPrecision:realPrecision;
                                
                        doubleToBytes(realPrecBytes, realPrecision);
                        memset(&realPrecBytes[2], 0, 6);
                        approxPrecision = bytesToDouble(realPrecBytes);
                        //put the realPrecision in double* pwrErBound
                        pwrErrBound[j++] = approxPrecision;
                        //put the two bytes in pwrErrBoundBytes
                        pwrErrBoundBytes[k++] = realPrecBytes[0];
                        pwrErrBoundBytes[k++] = realPrecBytes[1];
                        
                        realPrecision = fabs(curValue);
                }
                
                if(curValue!=0)
                {
                        curPrecision = fabs(curValue);
                        
                        switch(confparams_cpr->pwr_type)
                        {
                        case SZ_PWR_MIN_TYPE: 
                                if(realPrecision>curPrecision)
                                        realPrecision = curPrecision;   
                                break;
                        case SZ_PWR_AVG_TYPE:
                                sum += curPrecision;
                                break;
                        case SZ_PWR_MAX_TYPE:
                                if(realPrecision<curPrecision)
                                        realPrecision = curPrecision;                                   
                                break;
                        }
                }
        }
        if(confparams_cpr->pwr_type==SZ_PWR_AVG_TYPE)
        {
                int size = dataLength%confparams_cpr->segment_size==0?confparams_cpr->segment_size:dataLength%confparams_cpr->segment_size;
                realPrecision = sum/size;               
        }       
        if(confparams_cpr->errorBoundMode==ABS_AND_PW_REL||confparams_cpr->errorBoundMode==REL_AND_PW_REL)
                realPrecision = realPrecision<globalPrecision?realPrecision:globalPrecision; 
        else if(confparams_cpr->errorBoundMode==ABS_OR_PW_REL||confparams_cpr->errorBoundMode==REL_OR_PW_REL)
                realPrecision = realPrecision<globalPrecision?globalPrecision:realPrecision;    
        doubleToBytes(realPrecBytes, realPrecision);
        memset(&realPrecBytes[2], 0, 6);
        approxPrecision = bytesToDouble(realPrecBytes);
        //put the realPrecision in double* pwrErBound
        pwrErrBound[j++] = approxPrecision;
        //put the two bytes in pwrErrBoundBytes
        pwrErrBoundBytes[k++] = realPrecBytes[0];
        pwrErrBoundBytes[k++] = realPrecBytes[1];
}

unsigned int optimize_intervals_double_1D_pwr(double *oriData, size_t dataLength, double* pwrErrBound)
{       
        size_t i = 0, j = 0;
        double realPrecision = pwrErrBound[j++];        
        unsigned long radiusIndex;
        double pred_value = 0, pred_err;
        int *intervals = (int*)malloc(confparams_cpr->maxRangeRadius*sizeof(int));
        memset(intervals, 0, confparams_cpr->maxRangeRadius*sizeof(int));
        int totalSampleSize = dataLength/confparams_cpr->sampleDistance;
        for(i=2;i<dataLength;i++)
        {
                if(i%confparams_cpr->segment_size==0)
                        realPrecision = pwrErrBound[j++];
                if(i%confparams_cpr->sampleDistance==0)
                {
                        //pred_value = 2*oriData[i-1] - oriData[i-2];
                        pred_value = oriData[i-1];
                        pred_err = fabs(pred_value - oriData[i]);
                        radiusIndex = (unsigned long)((pred_err/realPrecision+1)/2);
                        if(radiusIndex>=confparams_cpr->maxRangeRadius)
                                radiusIndex = confparams_cpr->maxRangeRadius - 1;                       
                        intervals[radiusIndex]++;
                }
        }
        //compute the appropriate number
        size_t targetCount = totalSampleSize*confparams_cpr->predThreshold;
        size_t sum = 0;
        for(i=0;i<confparams_cpr->maxRangeRadius;i++)
        {
                sum += intervals[i];
                if(sum>targetCount)
                        break;
        }
        if(i>=confparams_cpr->maxRangeRadius)
                i = confparams_cpr->maxRangeRadius-1;
        unsigned int accIntervals = 2*(i+1);
        unsigned int powerOf2 = roundUpToPowerOf2(accIntervals);
        
        if(powerOf2<32)
                powerOf2 = 32;
        
        free(intervals);
        //printf("accIntervals=%d, powerOf2=%d\n", accIntervals, powerOf2);
        return powerOf2;
}

void compute_segment_precisions_double_2D(double *oriData, double* pwrErrBound, 
size_t r1, size_t r2, size_t R2, size_t edgeSize, unsigned char* pwrErrBoundBytes, double Min, double Max, double globalPrecision)
{
        size_t i = 0, j = 0, k = 0, p = 0, index = 0, J = 0; //I=-1,J=-1 if they are needed
        double realPrecision; 
        double approxPrecision;
        unsigned char realPrecBytes[8];
        double curValue, curAbsValue;
        double* statAbsValues = (double*)malloc(R2*sizeof(double));     
        
        double max = fabs(Min)<fabs(Max)?fabs(Max):fabs(Min); //get the max abs value.
        double min = fabs(Min)<fabs(Max)?fabs(Min):fabs(Max);
        for(i=0;i<R2;i++)
        {
                if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                        statAbsValues[i] = max;
                else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                        statAbsValues[i] = min;
                else
                        statAbsValues[i] = 0; //for SZ_PWR_AVG_TYPE
        }
        for(i=0;i<r1;i++)
        {
                for(j=0;j<r2;j++)
                {
                        index = i*r2+j;
                        curValue = oriData[index];                              
                        if(((i%edgeSize==edgeSize-1 || i==r1-1) &&j%edgeSize==0&&j>0) || (i%edgeSize==0&&j==0&&i>0))
                        {
                                if(confparams_cpr->pwr_type==SZ_PWR_AVG_TYPE)
                                {
                                        int a = edgeSize, b = edgeSize;
                                        if(j==0)
                                        {
                                                if(r2%edgeSize==0) 
                                                        b = edgeSize;
                                                else
                                                        b = r2%edgeSize;
                                        }
                                        if(i==r1-1)
                                        {
                                                if(r1%edgeSize==0)
                                                        a = edgeSize;
                                                else
                                                        a = r1%edgeSize;
                                        }
                                        realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J]/(a*b);
                                }
                                else
                                        realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J];

                                if(confparams_cpr->errorBoundMode==ABS_AND_PW_REL||confparams_cpr->errorBoundMode==REL_AND_PW_REL)
                                        realPrecision = realPrecision<globalPrecision?realPrecision:globalPrecision; 
                                else if(confparams_cpr->errorBoundMode==ABS_OR_PW_REL||confparams_cpr->errorBoundMode==REL_OR_PW_REL)
                                        realPrecision = realPrecision<globalPrecision?globalPrecision:realPrecision;
                                        
                                doubleToBytes(realPrecBytes, realPrecision);
                                memset(&realPrecBytes[2], 0, 6);
                                approxPrecision = bytesToDouble(realPrecBytes);
                                //put the realPrecision in double* pwrErBound
                                pwrErrBound[p++] = approxPrecision;
                                //put the two bytes in pwrErrBoundBytes
                                pwrErrBoundBytes[k++] = realPrecBytes[0];
                                pwrErrBoundBytes[k++] = realPrecBytes[1];       
                                
                                if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                        statAbsValues[J] = max;
                                else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                        statAbsValues[J] = min;
                                else
                                        statAbsValues[J] = 0; //for SZ_PWR_AVG_TYPE             
                        }       
                        if(j==0)
                                J = 0;
                        else if(j%edgeSize==0)
                                J++;                    
                        if(curValue!=0)
                        {
                                curAbsValue = fabs(curValue);
                                
                                switch(confparams_cpr->pwr_type)
                                {
                                case SZ_PWR_MIN_TYPE: 
                                        if(statAbsValues[J]>curAbsValue)
                                                statAbsValues[J] = curAbsValue; 
                                        break;
                                case SZ_PWR_AVG_TYPE:
                                        statAbsValues[J] += curAbsValue;
                                        break;
                                case SZ_PWR_MAX_TYPE:
                                        if(statAbsValues[J]<curAbsValue)
                                                statAbsValues[J] = curAbsValue;                                 
                                        break;
                                }
                        }
                }
        }
                
        if(confparams_cpr->pwr_type==SZ_PWR_AVG_TYPE)
        {
                int a = edgeSize, b = edgeSize;
                if(r2%edgeSize==0) 
                        b = edgeSize;
                else
                        b = r2%edgeSize;
                if(r1%edgeSize==0)
                        a = edgeSize;
                else
                        a = r1%edgeSize;
                realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J]/(a*b);
        }
        else
                realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J];              

        if(confparams_cpr->errorBoundMode==ABS_AND_PW_REL||confparams_cpr->errorBoundMode==REL_AND_PW_REL)
                realPrecision = realPrecision<globalPrecision?realPrecision:globalPrecision; 
        else if(confparams_cpr->errorBoundMode==ABS_OR_PW_REL||confparams_cpr->errorBoundMode==REL_OR_PW_REL)
                realPrecision = realPrecision<globalPrecision?globalPrecision:realPrecision;
                
        doubleToBytes(realPrecBytes, realPrecision);
        realPrecBytes[2] = realPrecBytes[3] = 0;
        approxPrecision = bytesToDouble(realPrecBytes);
        //put the realPrecision in double* pwrErBound
        pwrErrBound[p++] = approxPrecision;
        //put the two bytes in pwrErrBoundBytes
        pwrErrBoundBytes[k++] = realPrecBytes[0];
        pwrErrBoundBytes[k++] = realPrecBytes[1];       
        
        free(statAbsValues);
}

unsigned int optimize_intervals_double_2D_pwr(double *oriData, size_t r1, size_t r2, size_t R2, size_t edgeSize, double* pwrErrBound)
{       
        size_t i = 0,j = 0, index, I=0, J=0;
        double realPrecision = pwrErrBound[0];  
        unsigned long radiusIndex;
        double pred_value = 0, pred_err;
        int *intervals = (int*)malloc(confparams_cpr->maxRangeRadius*sizeof(int));
        memset(intervals, 0, confparams_cpr->maxRangeRadius*sizeof(int));
        size_t totalSampleSize = (r1-1)*(r2-1)/confparams_cpr->sampleDistance;
        size_t ir2;
        for(i=1;i<r1;i++)
        {
                ir2 = i*r2;
                if(i%edgeSize==0)
                {       
                        I++;
                        J = 0;
                }
                for(j=1;j<r2;j++)
                {
                        index = ir2+j;
                        if(j%edgeSize==0)
                                J++;
                                
                        if((i+j)%confparams_cpr->sampleDistance==0)
                        {
                                realPrecision = pwrErrBound[I*R2+J];
                                pred_value = oriData[index-1] + oriData[index-r2] - oriData[index-r2-1];
                                pred_err = fabs(pred_value - oriData[index]);
                                radiusIndex = (unsigned long)((pred_err/realPrecision+1)/2);
                                if(radiusIndex>=confparams_cpr->maxRangeRadius)
                                        radiusIndex = confparams_cpr->maxRangeRadius - 1;
                                intervals[radiusIndex]++;
                        }                       
                }
        }
        //compute the appropriate number
        size_t targetCount = totalSampleSize*confparams_cpr->predThreshold;
        size_t sum = 0;
        for(i=0;i<confparams_cpr->maxRangeRadius;i++)
        {
                sum += intervals[i];
                if(sum>targetCount)
                        break;
        }
        if(i>=confparams_cpr->maxRangeRadius)
                i = confparams_cpr->maxRangeRadius-1;
        unsigned int accIntervals = 2*(i+1);
        unsigned int powerOf2 = roundUpToPowerOf2(accIntervals);

        if(powerOf2<32)
                powerOf2 = 32;

        free(intervals);
        //printf("confparams_cpr->maxRangeRadius = %d, accIntervals=%d, powerOf2=%d\n", confparams_cpr->maxRangeRadius, accIntervals, powerOf2);
        return powerOf2;
}

void compute_segment_precisions_double_3D(double *oriData, double* pwrErrBound, 
size_t r1, size_t r2, size_t r3, size_t R2, size_t R3, size_t edgeSize, unsigned char* pwrErrBoundBytes, double Min, double Max, double globalPrecision)
{
        size_t i = 0, j = 0, k = 0, p = 0, q = 0, index = 0, J = 0, K = 0; //I=-1,J=-1 if they are needed
        size_t r23 = r2*r3, ir, jr;
        double realPrecision; 
        double approxPrecision;
        unsigned char realPrecBytes[8];
        double curValue, curAbsValue;
        
        double** statAbsValues = create2DArray_double(R2, R3);
        double max = fabs(Min)<fabs(Max)?fabs(Max):fabs(Min); //get the max abs value.  
        double min = fabs(Min)<fabs(Max)?fabs(Min):fabs(Max);
        for(i=0;i<R2;i++)
                for(j=0;j<R3;j++)
                {
                        if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                statAbsValues[i][j] = max;
                        else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                statAbsValues[i][j] = min;
                        else
                                statAbsValues[i][j] = 0;
                }
        for(i=0;i<r1;i++)
        {
                ir = i*r23;             
                if(i%edgeSize==0&&i>0)
                {
                        realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J][K];
                        doubleToBytes(realPrecBytes, realPrecision);
                        memset(&realPrecBytes[2], 0, 6);
                        approxPrecision = bytesToDouble(realPrecBytes);
                        //put the realPrecision in double* pwrErBound
                        pwrErrBound[p++] = approxPrecision;
                        //put the two bytes in pwrErrBoundBytes
                        //printf("q=%d, i=%d, j=%d, k=%d\n",q,i,j,k);
                        pwrErrBoundBytes[q++] = realPrecBytes[0];
                        pwrErrBoundBytes[q++] = realPrecBytes[1];
                        if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                statAbsValues[J][K] = max;
                        else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                statAbsValues[J][K] = min;
                }               
                for(j=0;j<r2;j++)
                {
                        jr = j*r3;
                        if((i%edgeSize==edgeSize-1 || i == r1-1)&&j%edgeSize==0&&j>0)
                        {
                                realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J][K];
                                doubleToBytes(realPrecBytes, realPrecision);
                                memset(&realPrecBytes[2], 0, 6);
                                approxPrecision = bytesToDouble(realPrecBytes);
                                //put the realPrecision in double* pwrErBound
                                pwrErrBound[p++] = approxPrecision;
                                //put the two bytes in pwrErrBoundBytes
                                //printf("q=%d, i=%d, j=%d, k=%d\n",q,i,j,k);
                                pwrErrBoundBytes[q++] = realPrecBytes[0];
                                pwrErrBoundBytes[q++] = realPrecBytes[1];
                                if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                        statAbsValues[J][K] = max;
                                else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                        statAbsValues[J][K] = min;                      
                        }
                        
                        if(j==0)
                                J = 0;
                        else if(j%edgeSize==0)
                                J++;                                    
                        
                        for(k=0;k<r3;k++)
                        {
                                index = ir+jr+k;                                
                                curValue = oriData[index];                              
                                if((i%edgeSize==edgeSize-1 || i == r1-1)&&(j%edgeSize==edgeSize-1||j==r2-1)&&k%edgeSize==0&&k>0)
                                {
                                        realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J][K];
                                        doubleToBytes(realPrecBytes, realPrecision);
                                        memset(&realPrecBytes[2], 0, 6);
                                        approxPrecision = bytesToDouble(realPrecBytes);
                                        //put the realPrecision in double* pwrErBound
                                        pwrErrBound[p++] = approxPrecision;
                                        //put the two bytes in pwrErrBoundBytes
                                        //printf("q=%d, i=%d, j=%d, k=%d\n",q,i,j,k);
                                        pwrErrBoundBytes[q++] = realPrecBytes[0];
                                        pwrErrBoundBytes[q++] = realPrecBytes[1];
                                        
                                        if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                                statAbsValues[J][K] = max;
                                        else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                                statAbsValues[J][K] = min;      
                                }       

                                if(k==0)
                                        K = 0;
                                else if(k%edgeSize==0)
                                        K++;
                                        
                                if(curValue!=0)
                                {
                                        curAbsValue = fabs(curValue);
                                        if(confparams_cpr->pwr_type == SZ_PWR_MIN_TYPE)
                                        {
                                                if(statAbsValues[J][K]>curAbsValue)
                                                {
                                                        statAbsValues[J][K] = curAbsValue;
                                                }
                                        }
                                        else if(confparams_cpr->pwr_type == SZ_PWR_MAX_TYPE)
                                        {
                                                if(statAbsValues[J][K]<curAbsValue)
                                                {
                                                        statAbsValues[J][K] = curAbsValue;
                                                }
                                        }
                                }
                        }                       
                }
        }       
        
        realPrecision = confparams_cpr->pw_relBoundRatio*statAbsValues[J][K];
        doubleToBytes(realPrecBytes, realPrecision);
        memset(&realPrecBytes[2], 0, 6);
        approxPrecision = bytesToDouble(realPrecBytes);
        //put the realPrecision in double* pwrErBound
        pwrErrBound[p++] = approxPrecision;
        //put the two bytes in pwrErrBoundBytes
        pwrErrBoundBytes[q++] = realPrecBytes[0];
        pwrErrBoundBytes[q++] = realPrecBytes[1];
        
        free2DArray_double(statAbsValues, R2);
}

unsigned int optimize_intervals_double_3D_pwr(double *oriData, size_t r1, size_t r2, size_t r3, size_t R2, size_t R3, size_t edgeSize, double* pwrErrBound)
{       
        size_t i,j,k, ir,jr,index, I = 0,J=0,K=0;
        double realPrecision = pwrErrBound[0];          
        unsigned long radiusIndex;
        size_t r23=r2*r3;
        size_t R23 = R2*R3;
        double pred_value = 0, pred_err;
        int *intervals = (int*)malloc(confparams_cpr->maxRangeRadius*sizeof(int));
        memset(intervals, 0, confparams_cpr->maxRangeRadius*sizeof(int));
        size_t totalSampleSize = (r1-1)*(r2-1)*(r3-1)/confparams_cpr->sampleDistance;
        for(i=1;i<r1;i++)
        {
                ir = i*r23;
                if(i%edgeSize==0)
                {       
                        I++;
                        J = 0;
                }
                for(j=1;j<r2;j++)
                {
                        jr = j*r3;
                        if(j%edgeSize==0)
                        {       
                                J++;
                                K = 0;
                        }                       
                        for(k=1;k<r3;k++)
                        {
                                index = ir+jr+k;
                                if(k%edgeSize==0)
                                        K++;            
                                if((i+j+k)%confparams_cpr->sampleDistance==0)
                                {
                                        realPrecision = pwrErrBound[I*R23+J*R2+K];                                      
                                        pred_value = oriData[index-1] + oriData[index-r3] + oriData[index-r23] 
                                        - oriData[index-1-r23] - oriData[index-r3-1] - oriData[index-r3-r23] + oriData[index-r3-r23-1];
                                        pred_err = fabs(pred_value - oriData[index]);
                                        radiusIndex = (unsigned long)((pred_err/realPrecision+1)/2);
                                        if(radiusIndex>=confparams_cpr->maxRangeRadius)
                                                radiusIndex = confparams_cpr->maxRangeRadius - 1;
                                        intervals[radiusIndex]++;
                                }
                        }
                }
        }
        //compute the appropriate number
        size_t targetCount = totalSampleSize*confparams_cpr->predThreshold;
        size_t sum = 0;
        for(i=0;i<confparams_cpr->maxRangeRadius;i++)
        {
                sum += intervals[i];
                if(sum>targetCount)
                        break;
        }
        if(i>=confparams_cpr->maxRangeRadius)
                i = confparams_cpr->maxRangeRadius-1;
        unsigned int accIntervals = 2*(i+1);
        unsigned int powerOf2 = roundUpToPowerOf2(accIntervals);

        if(powerOf2<32)
                powerOf2 = 32;
        
        free(intervals);
        //printf("accIntervals=%d, powerOf2=%d\n", accIntervals, powerOf2);
        return powerOf2;
}

void SZ_compress_args_double_NoCkRngeNoGzip_1D_pwr(unsigned char** newByteData, double *oriData, double globalPrecision, 
size_t dataLength, size_t *outSize, double min, double max)
{
        size_t pwrLength = dataLength%confparams_cpr->segment_size==0?dataLength/confparams_cpr->segment_size:dataLength/confparams_cpr->segment_size+1;
        double* pwrErrBound = (double*)malloc(sizeof(double)*pwrLength);
        size_t pwrErrBoundBytes_size = sizeof(unsigned char)*pwrLength*2;
        unsigned char* pwrErrBoundBytes = (unsigned char*)malloc(pwrErrBoundBytes_size);
        
        compute_segment_precisions_double_1D(oriData, dataLength, pwrErrBound, pwrErrBoundBytes, globalPrecision);

        unsigned int quantization_intervals;
        if(exe_params->optQuantMode==1)
        {
                quantization_intervals = optimize_intervals_double_1D_pwr(oriData, dataLength, pwrErrBound);    
                updateQuantizationInfo(quantization_intervals);
        }
        else
                quantization_intervals = exe_params->intvCapacity;
        size_t i = 0, j = 0;
        int reqLength;
        double realPrecision = pwrErrBound[j++];        
        double medianValue = 0;
        double radius = fabs(max)<fabs(min)?fabs(min):fabs(max);
        short radExpo = getExponent_double(radius);
        
        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);      

        int* type = (int*) malloc(dataLength*sizeof(int));
        //type[dataLength]=0;
                
        double* spaceFillingValue = oriData; //
        
        DynamicByteArray *resiBitLengthArray;
        new_DBA(&resiBitLengthArray, DynArrayInitLen);
        
        DynamicIntArray *exactLeadNumArray;
        new_DIA(&exactLeadNumArray, DynArrayInitLen);
        
        DynamicByteArray *exactMidByteArray;
        new_DBA(&exactMidByteArray, DynArrayInitLen);
        
        DynamicIntArray *resiBitArray;
        new_DIA(&resiBitArray, DynArrayInitLen);
        
        type[0] = 0;
        
        unsigned char preDataBytes[8] = {0};
        intToBytes_bigEndian(preDataBytes, 0);
        
        int reqBytesLength = reqLength/8;
        int resiBitsLength = reqLength%8;
        double last3CmprsData[3] = {0};

        DoubleValueCompressElement *vce = (DoubleValueCompressElement*)malloc(sizeof(DoubleValueCompressElement));
        LossyCompressionElement *lce = (LossyCompressionElement*)malloc(sizeof(LossyCompressionElement));
                                                
        //add the first data    
        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
        compressSingleDoubleValue(vce, spaceFillingValue[0], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
        memcpy(preDataBytes,vce->curBytes,8);
        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
        listAdd_double(last3CmprsData, vce->data);
        //printf("%.30G\n",last3CmprsData[0]);  
                
        //add the second data
        type[1] = 0;
        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);                 
        compressSingleDoubleValue(vce, spaceFillingValue[1], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
        memcpy(preDataBytes,vce->curBytes,8);
        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
        listAdd_double(last3CmprsData, vce->data);
        //printf("%.30G\n",last3CmprsData[0]);  
        
        int state;
        double checkRadius;
        double curData;
        double pred;
        double predAbsErr;
        checkRadius = (exe_params->intvCapacity-1)*realPrecision;
        double interval = 2*realPrecision;
        int updateReqLength = 0; //a marker: 1 means already updated
        
        for(i=2;i<dataLength;i++)
        {
                curData = spaceFillingValue[i];
                if(i%confparams_cpr->segment_size==0)
                {
                        realPrecision = pwrErrBound[j++];
                        checkRadius = (exe_params->intvCapacity-1)*realPrecision;
                        interval = 2*realPrecision;
                        updateReqLength = 0;
                }
                //pred = 2*last3CmprsData[0] - last3CmprsData[1];
                pred = last3CmprsData[0];
                predAbsErr = fabs(curData - pred);      
                if(predAbsErr<checkRadius)
                {
                        state = (predAbsErr/realPrecision+1)/2;
                        if(curData>=pred)
                        {
                                type[i] = exe_params->intvRadius+state;
                                pred = pred + state*interval;
                        }
                        else //curData<pred
                        {
                                type[i] = exe_params->intvRadius-state;
                                pred = pred - state*interval;
                        }
                        listAdd_double(last3CmprsData, pred);                   
                        continue;
                }
                
                //unpredictable data processing         
                if(updateReqLength==0)
                {
                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);                              
                        reqBytesLength = reqLength/8;
                        resiBitsLength = reqLength%8;
                        updateReqLength = 1;            
                }
                
                type[i] = 0;
                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                
                compressSingleDoubleValue(vce, curData, realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                memcpy(preDataBytes,vce->curBytes,8);
                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);

                listAdd_double(last3CmprsData, vce->data);      
        }//end of for
                
//      char* expSegmentsInBytes;
//      int expSegmentsInBytes_size = convertESCToBytes(esc, &expSegmentsInBytes);
        int exactDataNum = exactLeadNumArray->size;
        
        TightDataPointStorageD* tdps;
                        
        new_TightDataPointStorageD2(&tdps, dataLength, exactDataNum, 
                        type, exactMidByteArray->array, exactMidByteArray->size,  
                        exactLeadNumArray->array,  
                        resiBitArray->array, resiBitArray->size, 
                        resiBitLengthArray->array, resiBitLengthArray->size, 
                        realPrecision, medianValue, (char)reqLength, quantization_intervals, pwrErrBoundBytes, pwrErrBoundBytes_size, radExpo);

//sdi:Debug
/*      int sum =0;
        for(i=0;i<dataLength;i++)
                if(type[i]==0) sum++;
        printf("opt_quantizations=%d, exactDataNum=%d, sum=%d\n",quantization_intervals, exactDataNum, sum);
*/
//      writeUShortData(type, dataLength, "compressStateBytes.sb");
//      unsigned short type_[dataLength];
//      SZ_Reset();
//      decode_withTree(tdps->typeArray, tdps->typeArray_size, type_);  
//      printf("tdps->typeArray_size=%d\n", tdps->typeArray_size);
                
        //free memory
        free_DBA(resiBitLengthArray);
        free_DIA(exactLeadNumArray);
        free_DIA(resiBitArray);
        free(type);
                
        convertTDPStoFlatBytes_double(tdps, newByteData, outSize);
        
        int doubleSize=sizeof(double);
        if(*outSize>dataLength*doubleSize)
        {
                size_t k = 0, i;
                tdps->isLossless = 1;
                size_t totalByteLength = 3 + exe_params->SZ_SIZE_TYPE + 1 + doubleSize*dataLength;
                *newByteData = (unsigned char*)malloc(totalByteLength);
                
                unsigned char dsLengthBytes[exe_params->SZ_SIZE_TYPE];
                intToBytes_bigEndian(dsLengthBytes, dataLength);//4
                for (i = 0; i < 3; i++)//3
                        (*newByteData)[k++] = versionNumber[i];
                
                if(exe_params->SZ_SIZE_TYPE==4)
                {
                        (*newByteData)[k++] = 16;       //=00010000     
                }
                else 
                {
                        (*newByteData)[k++] = 80;
                }
                for (i = 0; i < exe_params->SZ_SIZE_TYPE; i++)//4 or 8
                        (*newByteData)[k++] = dsLengthBytes[i];

                
                if(sysEndianType==BIG_ENDIAN_SYSTEM)
                        memcpy((*newByteData)+4+exe_params->SZ_SIZE_TYPE, oriData, dataLength*doubleSize);
                else
                {
                        unsigned char* p = (*newByteData)+4+exe_params->SZ_SIZE_TYPE;
                        for(i=0;i<dataLength;i++,p+=doubleSize)
                                doubleToBytes(p, oriData[i]);
                }
                *outSize = totalByteLength;
        }
        
        free(pwrErrBound);
        
        free(vce);
        free(lce);
        free_TightDataPointStorageD(tdps);
        free(exactMidByteArray);
}


/**
 * 
 * Note: @r1 is high dimension
 *               @r2 is low dimension 
 * */
void SZ_compress_args_double_NoCkRngeNoGzip_2D_pwr(unsigned char** newByteData, double *oriData, double globalPrecision, size_t r1, size_t r2,
size_t *outSize, double min, double max)
{
        size_t dataLength=r1*r2;
        int blockEdgeSize = computeBlockEdgeSize_2D(confparams_cpr->segment_size);
        size_t R1 = 1+(r1-1)/blockEdgeSize;
        size_t R2 = 1+(r2-1)/blockEdgeSize;
        double* pwrErrBound = (double*)malloc(sizeof(double)*R1*R2);
        size_t pwrErrBoundBytes_size = sizeof(unsigned char)*R1*R2*2;
        unsigned char* pwrErrBoundBytes = (unsigned char*)malloc(pwrErrBoundBytes_size);
        
        compute_segment_precisions_double_2D(oriData, pwrErrBound, r1, r2, R2, blockEdgeSize, pwrErrBoundBytes, min, max, globalPrecision);
        unsigned int quantization_intervals;
        if(exe_params->optQuantMode==1)
        {
                quantization_intervals = optimize_intervals_double_2D_pwr(oriData, r1, r2, R2, blockEdgeSize, pwrErrBound);
                updateQuantizationInfo(quantization_intervals);
        }
        else
                quantization_intervals = exe_params->intvCapacity;      
        //printf("quantization_intervals=%d\n",quantization_intervals);
        
        size_t i=0,j=0,I=0,J=0; 
        int reqLength;
        double realPrecision = pwrErrBound[I*R2+J];     
        double pred1D, pred2D;
        double diff = 0.0;
        double itvNum = 0;
        double *P0, *P1;
        
        P0 = (double*)malloc(r2*sizeof(double));
        memset(P0, 0, r2*sizeof(double));
        P1 = (double*)malloc(r2*sizeof(double));
        memset(P1, 0, r2*sizeof(double));
                
        double medianValue = 0;
        double radius = fabs(max)<fabs(min)?fabs(min):fabs(max);
        short radExpo = getExponent_double(radius);
        int updateReqLength = 1;
        
        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);

        int* type = (int*) malloc(dataLength*sizeof(int));
        //type[dataLength]=0;
                
        double* spaceFillingValue = oriData; //
        
        DynamicByteArray *resiBitLengthArray;
        new_DBA(&resiBitLengthArray, DynArrayInitLen);
        
        DynamicIntArray *exactLeadNumArray;
        new_DIA(&exactLeadNumArray, DynArrayInitLen);
        
        DynamicByteArray *exactMidByteArray;
        new_DBA(&exactMidByteArray, DynArrayInitLen);
        
        DynamicIntArray *resiBitArray;
        new_DIA(&resiBitArray, DynArrayInitLen);
        
        type[0] = 0;
        
        unsigned char preDataBytes[8];
        longToBytes_bigEndian(preDataBytes, 0);
        
        int reqBytesLength = reqLength/8;
        int resiBitsLength = reqLength%8;

        DoubleValueCompressElement *vce = (DoubleValueCompressElement*)malloc(sizeof(DoubleValueCompressElement));
        LossyCompressionElement *lce = (LossyCompressionElement*)malloc(sizeof(LossyCompressionElement));
                        
        /* Process Row-0 data 0*/
        type[0] = 0;
        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
        compressSingleDoubleValue(vce, spaceFillingValue[0], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
        memcpy(preDataBytes,vce->curBytes,8);
        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
        P1[0] = vce->data;

        /* Process Row-0 data 1*/
        pred1D = P1[0];
        diff = spaceFillingValue[1] - pred1D;

        itvNum =  fabs(diff)/realPrecision + 1;

        if (itvNum < exe_params->intvCapacity)
        {
                if (diff < 0) itvNum = -itvNum;
                type[1] = (int) (itvNum/2) + exe_params->intvRadius;
                P1[1] = pred1D + 2 * (type[1] - exe_params->intvRadius) * realPrecision;
        }
        else
        {               
                type[1] = 0;

                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                compressSingleDoubleValue(vce, spaceFillingValue[1], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                memcpy(preDataBytes,vce->curBytes,8);
                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                P1[1] = vce->data;
        }

    /* Process Row-0 data 2 --> data r2-1 */
        for (j = 2; j < r2; j++)
        {
                if(j%blockEdgeSize==0)
                {
                        J++;
                        realPrecision = pwrErrBound[I*R2+J];
                        updateReqLength = 0;
                }

                pred1D = 2*P1[j-1] - P1[j-2];
                diff = spaceFillingValue[j] - pred1D;

                itvNum = fabs(diff)/realPrecision + 1;

                if (itvNum < exe_params->intvCapacity)
                {
                        if (diff < 0) itvNum = -itvNum;
                        type[j] = (int) (itvNum/2) + exe_params->intvRadius;
                        P1[j] = pred1D + 2 * (type[j] - exe_params->intvRadius) * realPrecision;
                }
                else
                {
                        if(updateReqLength==0)
                        {
                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                reqBytesLength = reqLength/8;
                                resiBitsLength = reqLength%8;
                                updateReqLength = 1;
                        }

                        type[j] = 0;

                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                        compressSingleDoubleValue(vce, spaceFillingValue[j], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        P1[j] = vce->data;
                }
        }

        /* Process Row-1 --> Row-r1-1 */
        size_t index;
        for (i = 1; i < r1; i++)
        {       
                /* Process row-i data 0 */
                index = i*r2;
                J = 0;
                if(i%blockEdgeSize==0)
                        I++;
                realPrecision = pwrErrBound[I*R2+J]; //J==0
                updateReqLength = 0;
                
                pred1D = P1[0];
                diff = spaceFillingValue[index] - pred1D;

                itvNum = fabs(diff)/realPrecision + 1;

                if (itvNum < exe_params->intvCapacity)
                {
                        if (diff < 0) itvNum = -itvNum;
                        type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                        P0[0] = pred1D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                }
                else
                {
                        if(updateReqLength==0)
                        {
                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                reqBytesLength = reqLength/8;
                                resiBitsLength = reqLength%8;
                                updateReqLength = 1;
                        }
                        
                        type[index] = 0;

                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                        compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        P0[0] = vce->data;
                }
                                                                        
                /* Process row-i data 1 --> r2-1*/
                for (j = 1; j < r2; j++)
                {
                        index = i*r2+j;
                        if(j%blockEdgeSize==0)
                        {
                                J++;
                                realPrecision = pwrErrBound[I*R2+J];
                                updateReqLength = 0;
                        }
                        pred2D = P0[j-1] + P1[j] - P1[j-1];

                        diff = spaceFillingValue[index] - pred2D;

                        itvNum = fabs(diff)/realPrecision + 1;

                        if (itvNum < exe_params->intvCapacity)
                        {
                                if (diff < 0) itvNum = -itvNum;
                                type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                                P0[j] = pred2D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                        }
                        else
                        {
                                if(updateReqLength==0)
                                {
                                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                        reqBytesLength = reqLength/8;
                                        resiBitsLength = reqLength%8;
                                        updateReqLength = 1;
                                }

                                type[index] = 0;

                                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                                compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                memcpy(preDataBytes,vce->curBytes,8);
                                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                                P0[j] = vce->data;
                        }
                }

                double *Pt;
                Pt = P1;
                P1 = P0;
                P0 = Pt;
        }
                
        if(r2!=1)       
                free(P0);
        free(P1);
        int exactDataNum = exactLeadNumArray->size;
        
        TightDataPointStorageD* tdps;
                        
        new_TightDataPointStorageD2(&tdps, dataLength, exactDataNum, 
                        type, exactMidByteArray->array, exactMidByteArray->size,  
                        exactLeadNumArray->array,  
                        resiBitArray->array, resiBitArray->size, 
                        resiBitLengthArray->array, resiBitLengthArray->size, 
                        realPrecision, medianValue, (char)reqLength, quantization_intervals, pwrErrBoundBytes, pwrErrBoundBytes_size, radExpo);
        
        //free memory
        free_DBA(resiBitLengthArray);
        free_DIA(exactLeadNumArray);
        free_DIA(resiBitArray);
        free(type);
                
        convertTDPStoFlatBytes_double(tdps, newByteData, outSize);

        free(pwrErrBound);
        
        free(vce);
        free(lce);
        free_TightDataPointStorageD(tdps);      
        free(exactMidByteArray);
}

void SZ_compress_args_double_NoCkRngeNoGzip_3D_pwr(unsigned char** newByteData, double *oriData, double globalPrecision, 
size_t r1, size_t r2, size_t r3, size_t *outSize, double min, double max)
{
        size_t dataLength=r1*r2*r3;
        
        int blockEdgeSize = computeBlockEdgeSize_3D(confparams_cpr->segment_size);
        size_t R1 = 1+(r1-1)/blockEdgeSize;
        size_t R2 = 1+(r2-1)/blockEdgeSize;
        size_t R3 = 1+(r3-1)/blockEdgeSize;
        double* pwrErrBound = (double*)malloc(sizeof(double)*R1*R2*R3);
        size_t pwrErrBoundBytes_size = sizeof(unsigned char)*R1*R2*R3*2;
        unsigned char* pwrErrBoundBytes = (unsigned char*)malloc(pwrErrBoundBytes_size);        
        
        compute_segment_precisions_double_3D(oriData, pwrErrBound, r1, r2, r3, R2, R3, blockEdgeSize, pwrErrBoundBytes, min, max, globalPrecision);     
        unsigned int quantization_intervals;
        if(exe_params->optQuantMode==1)
        {
                quantization_intervals = optimize_intervals_double_3D_pwr(oriData, r1, r2, r3, R2, R3, blockEdgeSize, pwrErrBound);
                updateQuantizationInfo(quantization_intervals);
        }       
        else
                quantization_intervals = exe_params->intvCapacity;
        size_t i=0,j=0,k=0, I = 0, J = 0, K = 0;
        int reqLength;
        double realPrecision = pwrErrBound[0];          
        double pred1D, pred2D, pred3D;
        double diff = 0.0;
        double itvNum = 0;
        double *P0, *P1;

        size_t r23 = r2*r3;
        size_t R23 = R2*R3;
        P0 = (double*)malloc(r23*sizeof(double));
        P1 = (double*)malloc(r23*sizeof(double));
        double radius = fabs(max)<fabs(min)?fabs(min):fabs(max);
        double medianValue = 0;
        short radExpo = getExponent_double(radius);
        int updateReqLength = 0;
        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);      

        int* type = (int*) malloc(dataLength*sizeof(int));
        //type[dataLength]=0;

        double* spaceFillingValue = oriData; //
        
        DynamicByteArray *resiBitLengthArray;
        new_DBA(&resiBitLengthArray, DynArrayInitLen);

        DynamicIntArray *exactLeadNumArray;
        new_DIA(&exactLeadNumArray, DynArrayInitLen);

        DynamicByteArray *exactMidByteArray;
        new_DBA(&exactMidByteArray, DynArrayInitLen);

        DynamicIntArray *resiBitArray;
        new_DIA(&resiBitArray, DynArrayInitLen);

        type[0] = 0;

        unsigned char preDataBytes[8];
        longToBytes_bigEndian(preDataBytes, 0);

        int reqBytesLength = reqLength/8;
        int resiBitsLength = reqLength%8;

        DoubleValueCompressElement *vce = (DoubleValueCompressElement*)malloc(sizeof(DoubleValueCompressElement));
        LossyCompressionElement *lce = (LossyCompressionElement*)malloc(sizeof(LossyCompressionElement));


        ///////////////////////////     Process layer-0 ///////////////////////////
        /* Process Row-0 data 0*/
        type[0] = 0;
        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
        compressSingleDoubleValue(vce, spaceFillingValue[0], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
        memcpy(preDataBytes,vce->curBytes,8);
        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
        P1[0] = vce->data;

        /* Process Row-0 data 1*/
        pred1D = P1[0];
        diff = spaceFillingValue[1] - pred1D;

        itvNum = fabs(diff)/realPrecision + 1;

        if (itvNum < exe_params->intvCapacity)
        {
                if (diff < 0) itvNum = -itvNum;
                type[1] = (int) (itvNum/2) + exe_params->intvRadius;
                P1[1] = pred1D + 2 * (type[1] - exe_params->intvRadius) * realPrecision;
        }
        else
        {
                if(updateReqLength==0)
                {
                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                        reqBytesLength = reqLength/8;
                        resiBitsLength = reqLength%8;
                        updateReqLength = 1;
                }               
                
                type[1] = 0;

                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                compressSingleDoubleValue(vce, spaceFillingValue[1], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                memcpy(preDataBytes,vce->curBytes,8);
                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                P1[1] = vce->data;
        }

    /* Process Row-0 data 2 --> data r3-1 */
        for (j = 2; j < r3; j++)
        {
                if(j%blockEdgeSize==0)
                {
                        J++;
                        realPrecision = pwrErrBound[J];
                        updateReqLength = 0;
                }               
                pred1D = 2*P1[j-1] - P1[j-2];
                diff = spaceFillingValue[j] - pred1D;

                itvNum = fabs(diff)/realPrecision + 1;

                if (itvNum < exe_params->intvCapacity)
                {
                        if (diff < 0) itvNum = -itvNum;
                        type[j] = (int) (itvNum/2) + exe_params->intvRadius;
                        P1[j] = pred1D + 2 * (type[j] - exe_params->intvRadius) * realPrecision;
                }
                else
                {
                        if(updateReqLength==0)
                        {
                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                reqBytesLength = reqLength/8;
                                resiBitsLength = reqLength%8;
                                updateReqLength = 1;
                        }                       

                        type[j] = 0;

                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                        compressSingleDoubleValue(vce, spaceFillingValue[j], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        P1[j] = vce->data;
                }
        }

        /* Process Row-1 --> Row-r2-1 */
        size_t index;
        K = 0;
        for (i = 1; i < r2; i++)
        {
                /* Process row-i data 0 */
                index = i*r3;   

                J = 0;
                if(i%blockEdgeSize==0)
                        I++;
                realPrecision = pwrErrBound[I*R3+J]; //J==0
                updateReqLength = 0;

                pred1D = P1[index-r3];
                diff = spaceFillingValue[index] - pred1D;

                itvNum = fabs(diff)/realPrecision + 1;

                if (itvNum < exe_params->intvCapacity)
                {
                        if (diff < 0) itvNum = -itvNum;
                        type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                        P1[index] = pred1D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                }
                else
                {
                        if(updateReqLength==0)
                        {
                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                reqBytesLength = reqLength/8;
                                resiBitsLength = reqLength%8;
                                updateReqLength = 1;
                        }               
                                                
                        type[index] = 0;

                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                        compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        P1[index] = vce->data;
                }

                /* Process row-i data 1 --> data r3-1*/
                for (j = 1; j < r3; j++) //note that this j refers to fastest dimension (lowest order)
                {
                        index = i*r3+j;         
                        if(j%blockEdgeSize==0)
                        {
                                J++;
                                realPrecision = pwrErrBound[I*R3+J];
                                updateReqLength = 0;
                        }                       
                
                        pred2D = P1[index-1] + P1[index-r3] - P1[index-r3-1];

                        diff = spaceFillingValue[index] - pred2D;

                        itvNum = fabs(diff)/realPrecision + 1;

                        if (itvNum < exe_params->intvCapacity)
                        {
                                if (diff < 0) itvNum = -itvNum;
                                type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                                P1[index] = pred2D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                        }
                        else
                        {
                                if(updateReqLength==0)
                                {
                                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                        reqBytesLength = reqLength/8;
                                        resiBitsLength = reqLength%8;
                                        updateReqLength = 1;
                                }                                               
                                
                                type[index] = 0;

                                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                                compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                memcpy(preDataBytes,vce->curBytes,8);
                                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                                P1[index] = vce->data;
                        }
                }
        }


        ///////////////////////////     Process layer-1 --> layer-r1-1 ///////////////////////////

        for (k = 1; k < r1; k++)
        {
                /* Process Row-0 data 0*/
                index = k*r23;                  
                I = 0;
                J = 0;
                if(k%blockEdgeSize==0)
                        K++;
                realPrecision = pwrErrBound[K*R23]; //J==0
                updateReqLength = 0;
                
                pred1D = P1[0];
                diff = spaceFillingValue[index] - pred1D;

                itvNum = fabs(diff)/realPrecision + 1;

                if (itvNum < exe_params->intvCapacity)
                {
                        if (diff < 0) itvNum = -itvNum;
                        type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                        P0[0] = pred1D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                }
                else
                {
                        if(updateReqLength==0)
                        {
                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                reqBytesLength = reqLength/8;
                                resiBitsLength = reqLength%8;
                                updateReqLength = 1;
                        }                                       
                        
                        type[index] = 0;

                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                        compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        P0[0] = vce->data;
                }


            /* Process Row-0 data 1 --> data r3-1 */
                for (j = 1; j < r3; j++)
                {
                        index = k*r23+j;        

                        if(j%blockEdgeSize==0)
                        {
                                J++;
                                realPrecision = pwrErrBound[K*R23+J];
                                updateReqLength = 0;                    
                        }                                       
                        pred2D = P0[j-1] + P1[j] - P1[j-1];
                        diff = spaceFillingValue[index] - pred2D;

                        itvNum = fabs(diff)/realPrecision + 1;

                        if (itvNum < exe_params->intvCapacity)
                        {
                                if (diff < 0) itvNum = -itvNum;
                                type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                                P0[j] = pred2D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                        }
                        else
                        {
                                if(updateReqLength==0)
                                {
                                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                        reqBytesLength = reqLength/8;
                                        resiBitsLength = reqLength%8;
                                        updateReqLength = 1;
                                }                                               
                                
                                type[index] = 0;

                                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                                compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                memcpy(preDataBytes,vce->curBytes,8);
                                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                                P0[j] = vce->data;
                        }
                }

            /* Process Row-1 --> Row-r2-1 */
                size_t index2D;
                for (i = 1; i < r2; i++)
                {
                        /* Process Row-i data 0 */
                        index = k*r23 + i*r3;

                        J = 0;
                        if(i%blockEdgeSize==0)
                                I++;
                        realPrecision = pwrErrBound[K*R23+I*R3+J]; //J==0
                        updateReqLength = 0;                    
                        
                        index2D = i*r3;         
                        pred2D = P0[index2D-r3] + P1[index2D] - P1[index2D-r3];
                        diff = spaceFillingValue[index] - pred2D;

                        itvNum = fabs(diff)/realPrecision + 1;

                        if (itvNum < exe_params->intvCapacity)
                        {
                                if (diff < 0) itvNum = -itvNum;
                                type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                                P0[index2D] = pred2D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                        }
                        else
                        {
                                if(updateReqLength==0)
                                {
                                        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                        reqBytesLength = reqLength/8;
                                        resiBitsLength = reqLength%8;
                                        updateReqLength = 1;
                                }                                               
                                
                                type[index] = 0;

                                addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                                compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                memcpy(preDataBytes,vce->curBytes,8);
                                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                                P0[index2D] = vce->data;
                        }

                        /* Process Row-i data 1 --> data r3-1 */
                        for (j = 1; j < r3; j++)
                        {
                                index = k*r23 + i*r3 + j;
                                
                                if(j%blockEdgeSize==0)
                                {
                                        J++;
                                        realPrecision = pwrErrBound[K*R23+I*R3+J];
                                        updateReqLength = 0;                    
                                }                                                       
                                index2D = i*r3 + j;
                                pred3D = P0[index2D-1] + P0[index2D-r3]+ P1[index2D] - P0[index2D-r3-1] - P1[index2D-r3] - P1[index2D-1] + P1[index2D-r3-1];
                                diff = spaceFillingValue[index] - pred3D;

                                itvNum = fabs(diff)/realPrecision + 1;

                                if (itvNum < exe_params->intvCapacity)
                                {
                                        if (diff < 0) itvNum = -itvNum;
                                        type[index] = (int) (itvNum/2) + exe_params->intvRadius;
                                        P0[index2D] = pred3D + 2 * (type[index] - exe_params->intvRadius) * realPrecision;
                                }
                                else
                                {
                                        if(updateReqLength==0)
                                        {
                                                computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);
                                                reqBytesLength = reqLength/8;
                                                resiBitsLength = reqLength%8;
                                                updateReqLength = 1;
                                        }                                                       
                                        
                                        type[index] = 0;

                                        addDBA_Data(resiBitLengthArray, (unsigned char)resiBitsLength);
                                        compressSingleDoubleValue(vce, spaceFillingValue[index], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                        memcpy(preDataBytes,vce->curBytes,8);
                                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                                        P0[index2D] = vce->data;
                                }
                        }
                }

                double *Pt;
                Pt = P1;
                P1 = P0;
                P0 = Pt;
        }
        if(r23!=1)
                free(P0);
        free(P1);
        int exactDataNum = exactLeadNumArray->size;

        TightDataPointStorageD* tdps;

        new_TightDataPointStorageD2(&tdps, dataLength, exactDataNum,
                        type, exactMidByteArray->array, exactMidByteArray->size,
                        exactLeadNumArray->array,
                        resiBitArray->array, resiBitArray->size,
                        resiBitLengthArray->array, resiBitLengthArray->size, 
                        realPrecision, medianValue, (char)reqLength, quantization_intervals, pwrErrBoundBytes, pwrErrBoundBytes_size, radExpo);

        convertTDPStoFlatBytes_double(tdps, newByteData, outSize);

        //free memory
        free_DBA(resiBitLengthArray);
        free_DIA(exactLeadNumArray);
        free_DIA(resiBitArray);
        free(type);

        free(pwrErrBound);

        free(vce);
        free(lce);
        free_TightDataPointStorageD(tdps);
        free(exactMidByteArray);
}

void createRangeGroups_double(double** posGroups, double** negGroups, int** posFlags, int** negFlags)
{
        size_t size = GROUP_COUNT*sizeof(double);
        size_t size2 = GROUP_COUNT*sizeof(int);
        *posGroups = (double*)malloc(size);
        *negGroups = (double*)malloc(size);
        *posFlags = (int*)malloc(size2);
        *negFlags = (int*)malloc(size2);
        memset(*posGroups, 0, size);
        memset(*negGroups, 0, size);
        memset(*posFlags, 0, size2);
        memset(*negFlags, 0, size2);
}

void compressGroupIDArray_double(char* groupID, TightDataPointStorageD* tdps)
{
        size_t dataLength = tdps->dataSeriesLength;
        int* standGroupID = (int*)malloc(dataLength*sizeof(int));

        size_t i;
        standGroupID[0] = groupID[0]+GROUP_COUNT; //plus an offset such that it would not be a negative number.
        char lastGroupIDValue = groupID[0], curGroupIDValue;
        int offset = 2*(GROUP_COUNT + 2);
        for(i=1; i<dataLength;i++)
        {
                curGroupIDValue = groupID[i];
                standGroupID[i] = (curGroupIDValue - lastGroupIDValue) + offset; 
                lastGroupIDValue = curGroupIDValue;
        }
        
        unsigned char* out = NULL;
        size_t outSize;
        
        HuffmanTree* huffmanTree = SZ_Reset();
        encode_withTree(huffmanTree, standGroupID, dataLength, &out, &outSize);
        SZ_ReleaseHuffman(huffmanTree);
        
        tdps->pwrErrBoundBytes = out; //groupIDArray
        tdps->pwrErrBoundBytes_size = outSize;
        
        free(standGroupID);
}

TightDataPointStorageD* SZ_compress_double_1D_MDQ_pwrGroup(double* oriData, size_t dataLength, int errBoundMode, 
double absErrBound, double relBoundRatio, double pwrErrRatio, double valueRangeSize, double medianValue_f)
{
        size_t i;
        double *posGroups, *negGroups, *groups;
        double pos_01_group = 0, neg_01_group = 0; //[0,1] and [-1,0]
        int *posFlags, *negFlags, *flags;
        int pos_01_flag = 0, neg_01_flag = 0;
        createRangeGroups_double(&posGroups, &negGroups, &posFlags, &negFlags);
        size_t nbBins = (size_t)(1/pwrErrRatio);
        if(nbBins%2==1)
                nbBins++;
        exe_params->intvRadius = nbBins;

        int reqLength, status;
        double medianValue = medianValue_f;
        double realPrecision = (double)getRealPrecision_double(valueRangeSize, errBoundMode, absErrBound, relBoundRatio, &status);
        if(realPrecision<0)
                realPrecision = pwrErrRatio;
        double realGroupPrecision; //precision (error) based on group ID
        getPrecisionReqLength_double(realPrecision);
        short radExpo = getExponent_double(valueRangeSize/2);
        short lastGroupNum = 0, groupNum, grpNum = 0;
        
        double* groupErrorBounds = generateGroupErrBounds(errBoundMode, realPrecision, pwrErrRatio);
        exe_params->intvRadius = generateGroupMaxIntervalCount(groupErrorBounds);
        
        computeReqLength_double(realPrecision, radExpo, &reqLength, &medianValue);

        int* type = (int*) malloc(dataLength*sizeof(int));
        char *groupID = (char*) malloc(dataLength*sizeof(char));
        char *gp = groupID;
                
        double* spaceFillingValue = oriData; 
        
        DynamicIntArray *exactLeadNumArray;
        new_DIA(&exactLeadNumArray, DynArrayInitLen);
        
        DynamicByteArray *exactMidByteArray;
        new_DBA(&exactMidByteArray, DynArrayInitLen);
        
        DynamicIntArray *resiBitArray;
        new_DIA(&resiBitArray, DynArrayInitLen);
        
        unsigned char preDataBytes[8];
        intToBytes_bigEndian(preDataBytes, 0);
        
        int reqBytesLength = reqLength/8;
        int resiBitsLength = reqLength%8;

        DoubleValueCompressElement *vce = (DoubleValueCompressElement*)malloc(sizeof(DoubleValueCompressElement));
        LossyCompressionElement *lce = (LossyCompressionElement*)malloc(sizeof(LossyCompressionElement));
                        
        int state;
        double curData, decValue;
        double pred;
        double predAbsErr;
        double interval = 0;
        
        //add the first data    
        type[0] = 0;
        compressSingleDoubleValue(vce, spaceFillingValue[0], realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
        memcpy(preDataBytes,vce->curBytes,8);
        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
        
        curData = spaceFillingValue[0];
        groupNum = computeGroupNum_double(vce->data);
        
        if(curData > 0 && groupNum >= 0)
        {
                groups = posGroups;
                flags = posFlags;
                grpNum = groupNum;
        }
        else if(curData < 0 && groupNum >= 0)
        {
                groups = negGroups;
                flags = negFlags;
                grpNum = groupNum;
        }
        else if(curData >= 0 && groupNum == -1)
        {
                groups = &pos_01_group;
                flags = &pos_01_flag;
                grpNum = 0;
        }
        else //curData < 0 && groupNum == -1
        {
                groups = &neg_01_group;
                flags = &neg_01_flag;
                grpNum = 0;
        }
                
        listAdd_double_group(groups, flags, groupNum, spaceFillingValue[0], vce->data, gp);
        gp++;
        
        for(i=1;i<dataLength;i++)
        {
                curData = oriData[i];
                //printf("i=%d, posGroups[3]=%f, negGroups[3]=%f\n", i, posGroups[3], negGroups[3]);
                
                groupNum = computeGroupNum_double(curData);
                
                if(curData > 0 && groupNum >= 0)
                {
                        groups = posGroups;
                        flags = posFlags;
                        grpNum = groupNum;
                }
                else if(curData < 0 && groupNum >= 0)
                {
                        groups = negGroups;
                        flags = negFlags;
                        grpNum = groupNum;
                }
                else if(curData >= 0 && groupNum == -1)
                {
                        groups = &pos_01_group;
                        flags = &pos_01_flag;
                        grpNum = 0;
                }
                else //curData < 0 && groupNum == -1
                {
                        groups = &neg_01_group;
                        flags = &neg_01_flag;
                        grpNum = 0;
                }

                if(groupNum>=GROUP_COUNT)
                {
                        type[i] = 0;
                        compressSingleDoubleValue(vce, curData, realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        listAdd_double_group(groups, flags, lastGroupNum, curData, vce->data, gp);      //set the group number to be last one in order to get the groupID array as smooth as possible.          
                }
                else if(flags[grpNum]==0) //the dec value may not be in the same group
                {       
                        type[i] = 0;
                        compressSingleDoubleValue(vce, curData, realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                        updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                        memcpy(preDataBytes,vce->curBytes,8);
                        addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);
                        //decGroupNum = computeGroupNum_double(vce->data);
                        
                        //if(decGroupNum < groupNum)
                        //      decValue = curData>0?pow(2, groupNum):-pow(2, groupNum);
                        //else if(decGroupNum > groupNum)
                        //      decValue = curData>0?pow(2, groupNum+1):-pow(2, groupNum+1);
                        //else
                        //      decValue = vce->data;
                        
                        decValue = vce->data;   
                        listAdd_double_group(groups, flags, groupNum, curData, decValue, gp);
                        lastGroupNum = curData>0?groupNum + 2: -(groupNum+2);
                }
                else //if flags[groupNum]==1, the dec value must be in the same group
                {
                        pred = groups[grpNum];
                        predAbsErr = fabs(curData - pred);
                        realGroupPrecision = groupErrorBounds[grpNum]; //compute real error bound
                        interval = realGroupPrecision*2;
                        state = (predAbsErr/realGroupPrecision+1)/2;
                        if(curData>=pred)
                        {
                                type[i] = exe_params->intvRadius+state;
                                decValue = pred + state*interval;
                        }
                        else //curData<pred
                        {
                                type[i] = exe_params->intvRadius-state;
                                decValue = pred - state*interval;
                        }
                        //decGroupNum = computeGroupNum_double(pred);
                        
                        if((decValue>0&&curData<0)||(decValue<0&&curData>=0))
                                decValue = 0;
                        //else
                        //{
                        //      if(decGroupNum < groupNum)
                        //              decValue = curData>0?pow(2, groupNum):-pow(2, groupNum);
                        //      else if(decGroupNum > groupNum)
                        //              decValue = curData>0?pow(2, groupNum+1):-pow(2, groupNum+1);
                        //      else
                        //              decValue = pred;                                
                        //}
                        
                        if(fabs(curData-decValue)>realGroupPrecision)
                        {       
                                type[i] = 0;
                                compressSingleDoubleValue(vce, curData, realPrecision, medianValue, reqLength, reqBytesLength, resiBitsLength);
                                updateLossyCompElement_Double(vce->curBytes, preDataBytes, reqBytesLength, resiBitsLength, lce);
                                memcpy(preDataBytes,vce->curBytes,8);
                                addExactData(exactMidByteArray, exactLeadNumArray, resiBitArray, lce);

                                decValue = vce->data;   
                        }
                        
                        listAdd_double_group(groups, flags, groupNum, curData, decValue, gp);                   
                        lastGroupNum = curData>=0?groupNum + 2: -(groupNum+2);                  
                }
                gp++;   

        }
        
        int exactDataNum = exactLeadNumArray->size;
        
        TightDataPointStorageD* tdps;
                        
        //combineTypeAndGroupIDArray(nbBins, dataLength, &type, groupID);

        new_TightDataPointStorageD(&tdps, dataLength, exactDataNum, 
                        type, exactMidByteArray->array, exactMidByteArray->size,  
                        exactLeadNumArray->array,  
                        resiBitArray->array, resiBitArray->size, 
                        resiBitsLength, 
                        realPrecision, medianValue, (char)reqLength, nbBins, NULL, 0, radExpo); 
        
        compressGroupIDArray_double(groupID, tdps);
        
        free(posGroups);
        free(negGroups);
        free(posFlags);
        free(negFlags);
        free(groupID);
        free(groupErrorBounds);
        
        free_DIA(exactLeadNumArray);
        free_DIA(resiBitArray);
        free(type);     
        free(vce);
        free(lce);      
        free(exactMidByteArray); //exactMidByteArray->array has been released in free_TightDataPointStorageF(tdps);     
        
        return tdps;
}

void SZ_compress_args_double_NoCkRngeNoGzip_1D_pwrgroup(unsigned char** newByteData, double *oriData,
size_t dataLength, double absErrBound, double relBoundRatio, double pwrErrRatio, double valueRangeSize, double medianValue_f, size_t *outSize)
{
        TightDataPointStorageD* tdps = SZ_compress_double_1D_MDQ_pwrGroup(oriData, dataLength, confparams_cpr->errorBoundMode, 
        absErrBound, relBoundRatio, pwrErrRatio, 
        valueRangeSize, medianValue_f);

        convertTDPStoFlatBytes_double(tdps, newByteData, outSize);

        if(*outSize>dataLength*sizeof(double))
                SZ_compress_args_double_StoreOriData(oriData, dataLength+2, tdps, newByteData, outSize);

        free_TightDataPointStorageD(tdps);
}

#include <stdbool.h>

void SZ_compress_args_double_NoCkRngeNoGzip_1D_pwr_pre_log(unsigned char** newByteData, double *oriData, double pwrErrRatio, size_t dataLength, size_t *outSize, double min, double max){

        double * log_data = (double *) malloc(dataLength * sizeof(double));

        unsigned char * signs = (unsigned char *) malloc(dataLength);
        memset(signs, 0, dataLength);
        // preprocess
        double max_abs_log_data;
    if(min == 0) max_abs_log_data = fabs(log2(fabs(max)));
    else if(max == 0) max_abs_log_data = fabs(log2(fabs(min)));
    else max_abs_log_data = fabs(log2(fabs(min))) > fabs(log2(fabs(max))) ? fabs(log2(fabs(min))) : fabs(log2(fabs(max)));
    double min_log_data = max_abs_log_data;
        bool positive = true;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] < 0){
                        signs[i] = 1;
                        log_data[i] = -oriData[i];
                        positive = false;
                }
                else
                        log_data[i] = oriData[i];
                if(log_data[i] > 0){
                        log_data[i] = log2(log_data[i]);
                        if(log_data[i] > max_abs_log_data) max_abs_log_data = log_data[i];
                        if(log_data[i] < min_log_data) min_log_data = log_data[i];
                }
        }

        double valueRangeSize, medianValue_f;
        computeRangeSize_double(log_data, dataLength, &valueRangeSize, &medianValue_f); 
        if(fabs(min_log_data) > max_abs_log_data) max_abs_log_data = fabs(min_log_data);
        double realPrecision = log2(1.0 + pwrErrRatio) - max_abs_log_data * 2.23e-16;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] == 0){
                        log_data[i] = min_log_data - 2.0001*realPrecision;
                }
        }
    TightDataPointStorageD* tdps = SZ_compress_double_1D_MDQ(log_data, dataLength, realPrecision, valueRangeSize, medianValue_f);
    tdps->minLogValue = min_log_data - 1.0001*realPrecision;
    free(log_data);
    if(!positive){
            unsigned char * comp_signs;
                // compress signs
                unsigned long signSize = sz_lossless_compress(confparams_cpr->losslessCompressor, confparams_cpr->gzipMode, signs, dataLength, &comp_signs);
                tdps->pwrErrBoundBytes = comp_signs;
                tdps->pwrErrBoundBytes_size = signSize;
        }
        else{
                tdps->pwrErrBoundBytes = NULL;
                tdps->pwrErrBoundBytes_size = 0;
        }
        free(signs);

    convertTDPStoFlatBytes_double(tdps, newByteData, outSize);
    if(*outSize>dataLength*sizeof(double))
            SZ_compress_args_double_StoreOriData(oriData, dataLength+2, tdps, newByteData, outSize);

    free_TightDataPointStorageD(tdps);
}

void SZ_compress_args_double_NoCkRngeNoGzip_2D_pwr_pre_log(unsigned char** newByteData, double *oriData, double pwrErrRatio, size_t r1, size_t r2, size_t *outSize, double min, double max){

        size_t dataLength = r1 * r2;
        double * log_data = (double *) malloc(dataLength * sizeof(double));

        unsigned char * signs = (unsigned char *) malloc(dataLength);
        memset(signs, 0, dataLength);
        // preprocess
        double max_abs_log_data;
    if(min == 0) max_abs_log_data = fabs(log2(fabs(max)));
    else if(max == 0) max_abs_log_data = fabs(log2(fabs(min)));
    else max_abs_log_data = fabs(log2(fabs(min))) > fabs(log2(fabs(max))) ? fabs(log2(fabs(min))) : fabs(log2(fabs(max)));
    double min_log_data = max_abs_log_data;
        bool positive = true;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] < 0){
                        signs[i] = 1;
                        log_data[i] = -oriData[i];
                        positive = false;
                }
                else
                        log_data[i] = oriData[i];
                if(log_data[i] > 0){
                        log_data[i] = log2(log_data[i]);
                        if(log_data[i] > max_abs_log_data) max_abs_log_data = log_data[i];
                        if(log_data[i] < min_log_data) min_log_data = log_data[i];
                }
        }

        double valueRangeSize, medianValue_f;
        computeRangeSize_double(log_data, dataLength, &valueRangeSize, &medianValue_f); 
        if(fabs(min_log_data) > max_abs_log_data) max_abs_log_data = fabs(min_log_data);
        double realPrecision = log2(1.0 + pwrErrRatio) - max_abs_log_data * 2.23e-16;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] == 0){
                        log_data[i] = min_log_data - 2.0001*realPrecision;
                }
        }
    TightDataPointStorageD* tdps = SZ_compress_double_2D_MDQ(log_data, r1, r2, realPrecision, valueRangeSize, medianValue_f);
    tdps->minLogValue = min_log_data - 1.0001*realPrecision;
    free(log_data);

    if(!positive){
            unsigned char * comp_signs;
                // compress signs
                unsigned long signSize = sz_lossless_compress(confparams_cpr->losslessCompressor, confparams_cpr->gzipMode, signs, dataLength, &comp_signs);
                tdps->pwrErrBoundBytes = comp_signs;
                tdps->pwrErrBoundBytes_size = signSize;
        }
        else{
                tdps->pwrErrBoundBytes = NULL;
                tdps->pwrErrBoundBytes_size = 0;
        }
        free(signs);

    convertTDPStoFlatBytes_double(tdps, newByteData, outSize);
    if(*outSize>dataLength*sizeof(double))
            SZ_compress_args_double_StoreOriData(oriData, dataLength+2, tdps, newByteData, outSize);

    free_TightDataPointStorageD(tdps);
}

void SZ_compress_args_double_NoCkRngeNoGzip_3D_pwr_pre_log(unsigned char** newByteData, double *oriData, double pwrErrRatio, size_t r1, size_t r2, size_t r3, size_t *outSize, double min, double max){

        size_t dataLength = r1 * r2 * r3;
        double * log_data = (double *) malloc(dataLength * sizeof(double));

        unsigned char * signs = (unsigned char *) malloc(dataLength);
        memset(signs, 0, dataLength);
        // preprocess
        double max_abs_log_data;
    if(min == 0) max_abs_log_data = fabs(log2(fabs(max)));
    else if(max == 0) max_abs_log_data = fabs(log2(fabs(min)));
    else max_abs_log_data = fabs(log2(fabs(min))) > fabs(log2(fabs(max))) ? fabs(log2(fabs(min))) : fabs(log2(fabs(max)));
    double min_log_data = max_abs_log_data;
        bool positive = true;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] < 0){
                        signs[i] = 1;
                        log_data[i] = -oriData[i];
                        positive = false;
                }
                else
                        log_data[i] = oriData[i];
                if(log_data[i] > 0){
                        log_data[i] = log2(log_data[i]);
                        if(log_data[i] > max_abs_log_data) max_abs_log_data = log_data[i];
                        if(log_data[i] < min_log_data) min_log_data = log_data[i];
                }
        }

        double valueRangeSize, medianValue_f;
        computeRangeSize_double(log_data, dataLength, &valueRangeSize, &medianValue_f); 
        if(fabs(min_log_data) > max_abs_log_data) max_abs_log_data = fabs(min_log_data);
        double realPrecision = log2(1.0 + pwrErrRatio) - max_abs_log_data * 2.23e-16;
        for(size_t i=0; i<dataLength; i++){
                if(oriData[i] == 0){
                        log_data[i] = min_log_data - 2.0001*realPrecision;
                }
        }
    TightDataPointStorageD* tdps = SZ_compress_double_3D_MDQ(log_data, r1, r2, r3, realPrecision, valueRangeSize, medianValue_f);
    tdps->minLogValue = min_log_data - 1.0001*realPrecision;
    free(log_data);
    if(!positive){
            unsigned char * comp_signs;
                // compress signs
                unsigned long signSize = sz_lossless_compress(confparams_cpr->losslessCompressor, confparams_cpr->gzipMode, signs, dataLength, &comp_signs);
                tdps->pwrErrBoundBytes = comp_signs;
                tdps->pwrErrBoundBytes_size = signSize;
        }
        else{
                tdps->pwrErrBoundBytes = NULL;
                tdps->pwrErrBoundBytes_size = 0;
        }
        free(signs);

    convertTDPStoFlatBytes_double(tdps, newByteData, outSize);
    if(*outSize>dataLength*sizeof(double))
            SZ_compress_args_double_StoreOriData(oriData, dataLength+2, tdps, newByteData, outSize);

    free_TightDataPointStorageD(tdps);
}