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Fix psign for unsigned integer types, such as bool.

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This commit is contained in:
Rasmus Munk Larsen 2022-08-22 20:19:35 +00:00
parent 1a09defce7
commit 6aad0f821b
2 changed files with 16 additions and 2 deletions
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17
Eigen/src/Core/arch/Default/GenericPacketMathFunctions.h
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@ -855,7 +855,7 @@ Packet psqrt_complex(const Packet& a) {
/** \internal \returns -1 if a is strictly negative, 0 otherwise, +1 if a is
strictly positive. */
template<typename Packet>
template<typename Packet>
EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
std::enable_if_t<(!NumTraits<typename unpacket_traits<Packet>::type>::IsComplex &&
!NumTraits<typename unpacket_traits<Packet>::type>::IsInteger), Packet>
@ -877,6 +877,7 @@ psign(const Packet& a) {
template<typename Packet>
EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
std::enable_if_t<(!NumTraits<typename unpacket_traits<Packet>::type>::IsComplex &&
NumTraits<typename unpacket_traits<Packet>::type>::IsSigned &&
NumTraits<typename unpacket_traits<Packet>::type>::IsInteger), Packet>
psign(const Packet& a) {
using Scalar = typename unpacket_traits<Packet>::type;
@ -892,6 +893,20 @@ psign(const Packet& a) {
return por(positive, negative);
}
template<typename Packet>
EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
std::enable_if_t<(!NumTraits<typename unpacket_traits<Packet>::type>::IsComplex &&
!NumTraits<typename unpacket_traits<Packet>::type>::IsSigned &&
NumTraits<typename unpacket_traits<Packet>::type>::IsInteger), Packet>
psign(const Packet& a) {
using Scalar = typename unpacket_traits<Packet>::type;
const Packet cst_one = pset1<Packet>(Scalar(1));
const Packet cst_zero = pzero(a);
const Packet zero_mask = pcmp_eq(cst_zero, a);
return pandnot(cst_one, zero_mask);
}
// \internal \returns the the sign of a complex number z, defined as z / abs(z).
template<typename Packet>
EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS

1
Eigen/src/Core/arch/SSE/PacketMath.h
View File

@ -218,7 +218,6 @@ template<> struct packet_traits<bool> : default_packet_traits
HasMin = 0,
HasMax = 0,
HasConj = 0,
HasSign = 0,
HasSqrt = 1
};
};