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Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/e_logl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/e_logl.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_logl.c b/sysdeps/ieee754/ldbl-128ibm/e_logl.c
index 58d6bc6972..dcac38062c 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_logl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_logl.c
@@ -219,6 +219,8 @@ __ieee754_logl(long double x)
   /* On this interval the table is not used due to cancellation error.  */
   if ((x <= 1.0078125L) && (x >= 0.9921875L))
     {
+      if (x == 1.0L)
+	return 0.0L;
       z = x - 1.0L;
       k = 64;
       t = 1.0L;