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| author |  Rasmus Munk Larsen <rmlarsen@google.com> | 2021-06-10 19:18:50 -0700 |
|---|---|---|
| committer | Rasmus Munk Larsen <rmlarsen@google.com> | 2021-06-11 02:35:53 +0000 |
| commit | fc87e2cbaa65e7e93a2c695ce5a9dc048a64a985 (patch) | |
| tree | 5660a36af91911a5f9e1b53c3de2b2622ebcce74 /Eigen/src/Core/arch/AltiVec/PacketMath.h | |
| parent | f64b2954c711b7846ae6ae228c5f14bd8dd56ec4 (diff) | |
Use bit_cast to create -0.0 for floating point types to avoid compiler optimization changing sign with --ffast-math enabled.
Diffstat (limited to 'Eigen/src/Core/arch/AltiVec/PacketMath.h')
| -rwxr-xr-x | Eigen/src/Core/arch/AltiVec/PacketMath.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Eigen/src/Core/arch/AltiVec/PacketMath.h b/Eigen/src/Core/arch/AltiVec/PacketMath.h index 7c70c07b1..d4aee3e21 100755 --- a/Eigen/src/Core/arch/AltiVec/PacketMath.h +++ b/Eigen/src/Core/arch/AltiVec/PacketMath.h @@ -2260,7 +2260,8 @@ static Packet2ul p2ul_SIGN = { 0x8000000000000000ull, 0x8000000000000000ull }; static Packet2ul p2ul_PREV0DOT5 = { 0x3FDFFFFFFFFFFFFFull, 0x3FDFFFFFFFFFFFFFull }; static Packet2d p2d_ONE = { 1.0, 1.0 }; static Packet2d p2d_ZERO = reinterpret_cast<Packet2d>(p4f_ZERO); -static Packet2d p2d_MZERO = { -0.0, -0.0 }; +static Packet2d p2d_MZERO = { numext::bit_cast<double>(0x8000000000000000ull), + numext::bit_cast<double>(0x8000000000000000ull) }; #ifdef _BIG_ENDIAN static Packet2d p2d_COUNTDOWN = reinterpret_cast<Packet2d>(vec_sld(reinterpret_cast<Packet4f>(p2d_ZERO), reinterpret_cast<Packet4f>(p2d_ONE), 8)); |