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-rw-r--r--sysdeps/libm-ieee754/s_ctanh.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_ctanh.c b/sysdeps/libm-ieee754/s_ctanh.c
index eb6ff84..d8825f3 100644
--- a/sysdeps/libm-ieee754/s_ctanh.c
+++ b/sysdeps/libm-ieee754/s_ctanh.c
@@ -19,6 +19,7 @@
Boston, MA 02111-1307, USA. */
#include <complex.h>
+#include <fenv.h>
#include <math.h>
#include "math_private.h"
@@ -44,6 +45,11 @@ __ctanh (__complex__ double x)
{
__real__ res = __nan ("");
__imag__ res = __nan ("");
+
+#ifdef FE_INVALID
+ if (__isinf (__imag__ x))
+ feraiseexcept (FE_INVALID);
+#endif
}
}
else