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Improved the default implementation of prsqrt

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This commit is contained in:
Benoit Steiner 2015-02-28 01:51:26 -08:00
parent 61409d9449
commit fb53384b0f
1 changed files with 1 additions and 3 deletions
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4
Eigen/src/Core/GenericPacketMath.h
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@ -378,9 +378,7 @@ Packet psqrt(const Packet& a) { using std::sqrt; return sqrt(a); }
/** \internal \returns the reciprocal square-root of \a a (coeff-wise) */
template<typename Packet> EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet prsqrt(const Packet& a) {
using std::sqrt;
const Packet one(1);
return one/sqrt(a);
return pdiv(pset1<Packet>(1), psqrt(a));
}
/***************************************************************************