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Merge branch 'master' of https://github.com/ispc/ispc

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This commit is contained in:
james.brodman
2012-11-13 17:08:09 -05:00
parent 32d44a5b9e b601331362
commit c736b75075
1 changed files with 7 additions and 3 deletions
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10
examples/intrinsics/knc.h
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@@ -1949,14 +1949,18 @@ static FORCEINLINE __vec16_f __sqrt_varying_float(__vec16_f v) {
static FORCEINLINE __vec16_f __rcp_varying_float(__vec16_f v) { static FORCEINLINE __vec16_f __rcp_varying_float(__vec16_f v) {
#ifdef ISPC_FAST_MATH #ifdef ISPC_FAST_MATH
return _mm512_recip_ps(v); return _mm512_rcp23_ps(v); // Approximation with 23 bits of accuracy.
#else #else
return _mm512_rcp23_ps(v); // 23-bits of accuracy return _mm512_recip_ps(v);
#endif #endif
} }
static FORCEINLINE __vec16_f __rsqrt_varying_float(__vec16_f v) { static FORCEINLINE __vec16_f __rsqrt_varying_float(__vec16_f v) {
return _mm512_rsqrt23_ps(v); // to 0.775ULP accuracy #ifdef ISPC_FAST_MATH
return _mm512_rsqrt23_ps(v); // Approximation with 0.775ULP accuracy
#else
return _mm512_invsqrt_pd(v);
#endif
} }
static FORCEINLINE __vec16_f __exp_varying_float(__vec16_f v) { static FORCEINLINE __vec16_f __exp_varying_float(__vec16_f v) {