Fix bug #642: add vectorization of sqrt for doubles, and make sqrt really safe if EIGEN_FAST_MATH is disabled

(grafted from d4dd6aaed2 and c47010e3d2 )
2026-04-10 11:34:33 +08:00 · 2013-08-19 16:02:27 +02:00
parent f9149f9ba0
commit 2b50ade6ca
3 changed files with 16 additions and 4 deletions
--- a/Eigen/src/Core/arch/SSE/PacketMath.h
+++ b/Eigen/src/Core/arch/SSE/PacketMath.h
@@ -83,7 +83,8 @@ template<> struct packet_traits<double> : default_packet_traits
    size=2,

    HasDiv  = 1,
-    HasExp  = 1
+    HasExp  = 1,
+    HasSqrt = 1
  };
 };
 template<> struct packet_traits<int>    : default_packet_traits