From 1d09c41e18e75bd51bc463106f7a168a47a247fc Mon Sep 17 00:00:00 2001
From: Recep Aslantas <info@recp.me>
Date: Mon, 1 Apr 2024 13:23:52 +0300
Subject: [PATCH] make xor enable in SSEonly + fast math

---
 include/cglm/simd/x86.h | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/include/cglm/simd/x86.h b/include/cglm/simd/x86.h
index 071a2721..b107a36d 100644
--- a/include/cglm/simd/x86.h
+++ b/include/cglm/simd/x86.h
@@ -55,8 +55,20 @@
 #endif
 
 /* Note that `0x80000000` corresponds to `INT_MIN` for a 32-bit int. */
-#define GLMM_NEGZEROf ((int)0x80000000) /*  0x80000000 ---> -0.0f  */
-#define GLMM_POSZEROf ((int)0x00000000) /*  0x00000000 ---> +0.0f  */
+
+#if defined(__SSE2__)
+#  define GLMM_NEGZEROf ((int)0x80000000) /*  0x80000000 ---> -0.0f  */
+#  define GLMM_POSZEROf ((int)0x00000000) /*  0x00000000 ---> +0.0f  */
+#else
+#  ifdef CGLM_FAST_MATH
+     union { int i; float f; } static GLMM_NEGZEROf_TU = { .i = 0x80000000 };
+#    define GLMM_NEGZEROf GLMM_NEGZEROf_TU.f
+#    define GLMM_POSZEROf 0.0f
+#  else
+#    define GLMM_NEGZEROf -0.0f
+#    define GLMM_POSZEROf  0.0f
+#  endif
+#endif
 
 #if defined(__SSE2__)
 #  define GLMM__SIGNMASKf(X, Y, Z, W)                                         \