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Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_cosl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_cosl.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_cosl.c b/sysdeps/ieee754/ldbl-128ibm/s_cosl.c
index 59a8196706..8470850fc8 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_cosl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_cosl.c
@@ -44,6 +44,7 @@
* TRIG(x) returns trig(x) nearly rounded
*/
+#include <errno.h>
#include "math.h"
#include "math_private.h"
#include <math_ldbl_opt.h>
@@ -67,9 +68,11 @@
return __kernel_cosl(x,z);
/* cos(Inf or NaN) is NaN */
- else if (ix>=0x7ff0000000000000LL)
+ else if (ix>=0x7ff0000000000000LL) {
+ if (ix == 0x7ff0000000000000LL)
+ __set_errno (EDOM);
return x-x;
-
+ }
/* argument reduction needed */
else {
n = __ieee754_rem_pio2l(x,y);