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Avoid using std::raise() for divide by zero

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Alexander Richardson 2022-12-14 20:06:16 +00:00 committed by Rasmus Munk Larsen
parent 62de593c40
commit 37de432907
2 changed files with 5 additions and 5 deletions
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4
Eigen/Core
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@ -177,10 +177,6 @@ using std::ptrdiff_t;
#include "src/Core/arch/Default/TypeCasting.h" #include "src/Core/arch/Default/TypeCasting.h"
#include "src/Core/arch/Default/GenericPacketMathFunctionsFwd.h" #include "src/Core/arch/Default/GenericPacketMathFunctionsFwd.h"
#ifndef EIGEN_GPU_COMPILE_PHASE
#include <csignal>
#endif
#if defined EIGEN_VECTORIZE_AVX512 #if defined EIGEN_VECTORIZE_AVX512
#if defined EIGEN_VECTORIZE_AVX512FP16 #if defined EIGEN_VECTORIZE_AVX512FP16
#include "src/Core/arch/AVX512/PacketMathFP16.h" #include "src/Core/arch/AVX512/PacketMathFP16.h"

6
Eigen/src/Core/functors/BinaryFunctors.h
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@ -388,7 +388,11 @@ template <typename Packet>
struct maybe_raise_div_by_zero<Packet, true> { struct maybe_raise_div_by_zero<Packet, true> {
static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void run(Packet x) { static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void run(Packet x) {
if (EIGEN_PREDICT_FALSE(predux_any(pcmp_eq(x, pzero(x))))) { if (EIGEN_PREDICT_FALSE(predux_any(pcmp_eq(x, pzero(x))))) {
std::raise(SIGFPE); // Use volatile variables to force a division by zero, which will
// result in the default platform behaviour (usually SIGFPE).
volatile typename unpacket_traits<Packet>::type zero = 0;
volatile typename unpacket_traits<Packet>::type val = 1;
val = val / zero;
} }
} }
}; };