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Implement pmadd for float and double to make it consistent with the vectorized path when FMA is available.

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This commit is contained in:
Gael Guennebaud 2016-08-23 14:24:08 +02:00
parent a4c266f827
commit b3151bca40
1 changed files with 10 additions and 0 deletions
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10
Eigen/src/Core/arch/SSE/PacketMath.h
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@ -813,6 +813,16 @@ template<> EIGEN_STRONG_INLINE Packet2d pblend(const Selector<2>& ifPacket, cons
#endif #endif
} }
// Scalar path for pmadd with FMA to ensure consistency with vectorized path.
#ifdef __FMA__
template<> EIGEN_STRONG_INLINE float pmadd(const float& a, const float& b, const float& c) {
return ::fmaf(a,b,c);
}
template<> EIGEN_STRONG_INLINE double pmadd(const double& a, const double& b, const double& c) {
return ::fma(a,b,c);
}
#endif
} // end namespace internal } // end namespace internal
} // end namespace Eigen } // end namespace Eigen