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log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11.
[gnulib.git]
/
lib
/
log.c
diff --git
a/lib/log.c
b/lib/log.c
index
960ec82
..
4c824d4
100644
(file)
--- a/
lib/log.c
+++ b/
lib/log.c
@@
-23,9
+23,16
@@
double
log (double x)
#undef log
{
log (double x)
#undef log
{
- /* 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 log (x);
}
return log (x);
}