Changes between Version 47 and Version 48 of WikiStart

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10/18/13 23:23:17 (4 years ago)
Author:
hfinkel
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    v47 v48  
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    124 In addition, you can use IBM's SIMD MASS library by including the appropriate header and linking with -lmass_simd. Compared to IBM's SIMD MASS library, bgclang's vector math functions tend to be slower but more accurate. 
     124In addition, you can use IBM's SIMD MASS library by including the appropriate header and linking with -lmass_simd. Compared to IBM's SIMD MASS library, bgclang's vector math functions tend to be slower but more accurate. The maximum errors from the qpxmath functions are provided here: [attachment:qpxmath_max_error.txt]. 
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    126126For convenience, if you define QPXMATH_MASS_SIMD_FUNCTIONS before including the qpxmath.h header, aliases will also be defined for libmass_simd function names (sind4, etc.). Note, however, that libmass_simd provides some functions not provided by bgclang's vector math library. Also, bgclang's vector math library provides vectorized ldexp and ilogb functions (which libmass_simd does not provide).