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-rw-r--r--sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c b/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c
index b8ab748304..84593521cc 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/e_cosh.c
@@ -67,6 +67,7 @@ __ieee754_cosh (double x)
     /* |x| in [log(maxdouble), overflowthresold] */
 	int64_t fix;
 	EXTRACT_WORDS64(fix, x);
+	fix &= UINT64_C(0x7fffffffffffffff);
 	if (fix <= UINT64_C(0x408633ce8fb9f87d)) {
 	    w = __ieee754_exp(half*fabs(x));
 	    t = half*w;