devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

* add ei_predux_mul internal function

Browse Source 
* apply Ricard Marxer's prod() patch with fixes for the vectorized path
This commit is contained in:
Gael Guennebaud
2009-02-10 18:06:05 +00:00
parent a0cc5fba0a
commit cbbc6d940b
12 changed files with 397 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
Eigen/src/Core/arch/SSE/PacketMath.h
View File

@@ -214,6 +214,23 @@ template<> EIGEN_STRONG_INLINE __m128i ei_preduxp<__m128i>(const __m128i* vecs)
return _mm_add_epi32(tmp0, tmp2);
}
// Other reduction functions:
template<> EIGEN_STRONG_INLINE float ei_predux_mul<__m128>(const __m128& a)
{
__m128 tmp = _mm_mul_ps(a, _mm_movehl_ps(a,a));
return ei_pfirst(_mm_mul_ss(tmp, _mm_shuffle_ps(tmp,tmp, 1)));
}
template<> EIGEN_STRONG_INLINE double ei_predux_mul<__m128d>(const __m128d& a)
{
return ei_pfirst(_mm_mul_sd(a, _mm_unpackhi_pd(a,a)));
}
template<> EIGEN_STRONG_INLINE int ei_predux_mul<__m128i>(const __m128i& a)
{
__m128i tmp = ei_pmul(a, _mm_unpackhi_epi64(a,a));
return ei_pfirst(tmp) * ei_pfirst(_mm_shuffle_epi32(tmp, 1));
}
#if (defined __GNUC__)
// template <> EIGEN_STRONG_INLINE __m128 ei_pmadd(const __m128& a, const __m128& b, const __m128& c)
// {