1 files changed, 47 insertions, 0 deletions
diff --git a/math/R-cran-RcppEigen/files/patch-inst_include_Eigen_src_Core_arch_AltiVec_MathFunctions.h b/math/R-cran-RcppEigen/files/patch-inst_include_Eigen_src_Core_arch_AltiVec_MathFunctions.h
new file mode 100644
index 000000000000..ded96d6084c5
--- /dev/null
+++ b/math/R-cran-RcppEigen/files/patch-inst_include_Eigen_src_Core_arch_AltiVec_MathFunctions.h
@@ -0,0 +1,47 @@
+--- inst/include/Eigen/src/Core/arch/AltiVec/MathFunctions.h.orig	2021-08-18 20:41:58 UTC
++++ inst/include/Eigen/src/Core/arch/AltiVec/MathFunctions.h
+@@ -40,16 +40,14 @@ Packet4f pcos<Packet4f>(const Packet4f& _x)
+   return pcos_float(_x);
+ }
+ 
++#ifdef __VSX__
+ #ifndef EIGEN_COMP_CLANG
+ template<> EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS EIGEN_UNUSED
+ Packet4f prsqrt<Packet4f>(const Packet4f& x)
+ {
+   return  vec_rsqrt(x);
+ }
+-#endif
+ 
+-#ifdef __VSX__
+-#ifndef EIGEN_COMP_CLANG
+ template<> EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS EIGEN_UNUSED
+ Packet2d prsqrt<Packet2d>(const Packet2d& x)
+ {
+@@ -73,6 +71,26 @@ template<> EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEF
+ Packet2d pexp<Packet2d>(const Packet2d& _x)
+ {
+   return pexp_double(_x);
++}
++
++template<> EIGEN_STRONG_INLINE Packet8bf psqrt<Packet8bf> (const Packet8bf& a){
++  BF16_TO_F32_UNARY_OP_WRAPPER(psqrt<Packet4f>, a);
++}
++
++#ifndef EIGEN_COMP_CLANG
++template<> EIGEN_STRONG_INLINE Packet8bf prsqrt<Packet8bf> (const Packet8bf& a){
++  BF16_TO_F32_UNARY_OP_WRAPPER(prsqrt<Packet4f>, a);
++}
++#endif
++#else
++template<> EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
++Packet4f psqrt<Packet4f>(const Packet4f& x)
++{
++  Packet4f a;
++  for (Index i = 0; i < packet_traits<float>::size; i++) {
++    a[i] = numext::sqrt(x[i]);
++  }
++  return a;
+ }
+ #endif
+