maint: update copyright

[gnulib.git] / lib / log10.c

diff --git a/lib/log10.c b/lib/log10.c
index 9e959b8..d757465 100644 (file)
--- a/lib/log10.c
+++ b/lib/log10.c
@@ -1,5 +1,5 @@
 /* Base 10 logarithmic function.
-   Copyright (C) 2012 Free Software Foundation, Inc.
+   Copyright (C) 2012-2014 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -23,9 +23,16 @@ double
 log10 (double x)
 #undef log10
 {
-  /* Work around the OSF/1 5.1 bug.  */
-  if (x == 0.0)
-    /* Return -Infinity.  */
-    return -1.0 / 0.0;
+  if (x <= 0.0)
+    {
+      /* Work around the OSF/1 5.1 bug.  */
+      if (x == 0.0)
+        /* Return -Infinity.  */
+        return -1.0 / 0.0;
+      /* Work around the NetBSD 5.1, Solaris 11 2011-11 bug.  */
+      else /* x < 0.0 */
+        /* Return NaN.  */
+        return 0.0 / 0.0;
+    }
   return log10 (x);
 }