devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add signbit function

Browse Source
This commit is contained in:
Charles Schlosser
2022-11-04 00:31:20 +00:00
committed by Rasmus Munk Larsen
parent 8f8e36458f
commit 82b152dbe7
12 changed files with 332 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
Eigen/src/Core/arch/AltiVec/PacketMath.h
View File

@@ -1575,6 +1575,9 @@ template<> EIGEN_STRONG_INLINE Packet8bf pabs(const Packet8bf& a) {
return pand<Packet8us>(p8us_abs_mask, a);
}
template<> EIGEN_STRONG_INLINE Packet8bf psignbit(const Packet8bf& a) { return vec_sra(a.m_val, vec_splat_u16(15)); }
template<> EIGEN_STRONG_INLINE Packet4f psignbit(const Packet4f& a) { return (Packet4f)vec_sra((Packet4i)a, vec_splats(uint32_t(31))); }
template<int N> EIGEN_STRONG_INLINE Packet4i parithmetic_shift_right(const Packet4i& a)
{ return vec_sra(a,reinterpret_cast<Packet4ui>(pset1<Packet4i>(N))); }
template<int N> EIGEN_STRONG_INLINE Packet4i plogical_shift_right(const Packet4i& a)
@@ -2928,7 +2931,7 @@ template<> EIGEN_STRONG_INLINE Packet2d preverse(const Packet2d& a)
return vec_sld(a, a, 8);
}
template<> EIGEN_STRONG_INLINE Packet2d pabs(const Packet2d& a) { return vec_abs(a); }
template<> EIGEN_STRONG_INLINE Packet2d psignbit(const Packet2d& a) { return (Packet2d)vec_sra((Packet2l)a, vec_splats(uint64_t(63))); }
// VSX support varies between different compilers and even different
// versions of the same compiler. For gcc version >= 4.9.3, we can use
// vec_cts to efficiently convert Packet2d to Packet2l. Otherwise, use