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-rw-r--r--src/math/__fpclassifyl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/math/__fpclassifyl.c b/src/math/__fpclassifyl.c
index 4f93bef1..4f4f37a7 100644
--- a/src/math/__fpclassifyl.c
+++ b/src/math/__fpclassifyl.c
@@ -7,10 +7,10 @@ int __fpclassifyl(long double __x)
 	union {
 		long double __ld;
 		__uint16_t __hw[5];
-		__uint64_t __m;
+		__int64_t __m;
 	} __y = { __x };
 	int __ee = __y.__hw[4]&0x7fff;
 	if (!__ee) return __y.__m ? FP_SUBNORMAL : FP_ZERO;
 	if (__ee==0x7fff) return __y.__m ? FP_NAN : FP_INFINITE;
-	return FP_NORMAL;
+	return __y.__m < 0 ? FP_NORMAL : FP_NAN;
 }