From 8a7f5d14b8ae88986bf4ba3981fb33dbbf65b1a2 Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Sun, 7 Apr 2024 22:31:23 -0700
Subject: [PATCH] Fixed

---
 src/halfvec.c | 6 ++++--
 src/halfvec.h | 5 ++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/halfvec.c b/src/halfvec.c
index 3383ff6..e9de6a4 100644
--- a/src/halfvec.c
+++ b/src/halfvec.c
@@ -103,7 +103,8 @@ pq_sendhalf(StringInfo buf, half h)
 float
 HalfToFloat4(half num)
 {
-#if defined(F16C_SUPPORT)
+#if defined(F16C_SUPPORT) && !defined(_MSC_VER)
+	/* TODO Use instrinsics for Windows */
 	return _cvtsh_ss(num);
 #elif defined(FLT16_SUPPORT)
 	return (float) num;
@@ -190,7 +191,8 @@ HalfToFloat4(half num)
 half
 Float4ToHalfUnchecked(float num)
 {
-#if defined(F16C_SUPPORT)
+#if defined(F16C_SUPPORT) && !defined(_MSC_VER)
+	/* TODO Use instrinsics for Windows */
 	return _cvtss_sh(num, 0);
 #elif defined(FLT16_SUPPORT)
 	return (_Float16) num;
diff --git a/src/halfvec.h b/src/halfvec.h
index f737fcf..56bdc73 100644
--- a/src/halfvec.h
+++ b/src/halfvec.h
@@ -8,7 +8,10 @@
 #include "vector.h"
 
 /* F16C has better performance than _Float16 (on x86-64) */
-#if defined(__F16C__) || defined(__AVX2__)
+#if defined(__F16C__)
+#define F16C_SUPPORT
+/* TODO Improve detection */
+#elif defined(_MSC_VER) && defined(__AVX2__)
 #define F16C_SUPPORT
 #elif defined(__FLT16_MAX__)
 #define FLT16_SUPPORT