From e779e64c952ab59799c046f546737af80fa0533a Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Tue, 18 Sep 2012 11:20:48 -0700
Subject: Win64 doesn't allow _controlfp or __control87_2 to set the precision
 control bits

---
 Alc/helpers.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'Alc/helpers.c')

diff --git a/Alc/helpers.c b/Alc/helpers.c
index 53f4016f..0f254533 100644
--- a/Alc/helpers.c
+++ b/Alc/helpers.c
@@ -173,6 +173,12 @@ void al_free(void *ptr)
 }
 
 
+#if (defined(HAVE___CONTROL87_2) || defined(HAVE__CONTROLFP)) && (defined(__x86_64__) || defined(_M_X64))
+/* Win64 doesn't allow us to set the precision control. */
+#undef _MCW_PC
+#define _MCW_PC 0
+#endif
+
 void SetMixerFPUMode(FPUCtl *ctl)
 {
 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
-- 
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