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Diffstat (limited to 'sysdeps/ieee754/dbl-64')
-rw-r--r--sysdeps/ieee754/dbl-64/e_j1.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_j1.c b/sysdeps/ieee754/dbl-64/e_j1.c
index bc7ca0609f..b7b8a9a644 100644
--- a/sysdeps/ieee754/dbl-64/e_j1.c
+++ b/sysdeps/ieee754/dbl-64/e_j1.c
@@ -58,6 +58,7 @@
  *	   by method mentioned above.
  */
 
+#include <errno.h>
 #include <math.h>
 #include <math_private.h>
 
@@ -205,7 +206,10 @@ __ieee754_y1 (double x)
     }
   if (__glibc_unlikely (ix <= 0x3c900000))              /* x < 2**-54 */
     {
-      return (-tpi / x);
+      z = -tpi / x;
+      if (__isinf (z))
+	__set_errno (ERANGE);
+      return z;
     }
   z = x * x;
   u1 = U0[0] + z * U0[1]; z2 = z * z;