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diff --git a/math_private.h b/math_private.h
--- a/math_private.h
+++ b/math_private.h
@@ -309,17 +309,17 @@ do { \
/* The above works on non-i386 too, but we use this to check v. */
#define LD80C(m, ex, v) { .e = (v), }
#endif
#ifdef FLT_EVAL_METHOD
/*
* Attempt to get strict C99 semantics for assignment with non-C99 compilers.
*/
-#if FLT_EVAL_METHOD == 0 || __GNUC__ == 0
+#if !defined(_MSC_VER) && (FLT_EVAL_METHOD == 0 || __GNUC__ == 0)
#define STRICT_ASSIGN(type, lval, rval) ((lval) = (rval))
#else
#define STRICT_ASSIGN(type, lval, rval) do { \
volatile type __lval; \
\
if (sizeof(type) >= sizeof(long double)) \
(lval) = (rval); \
else { \