diff options
Diffstat (limited to 'src/floatfns.c')
| -rw-r--r-- | src/floatfns.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/floatfns.c b/src/floatfns.c index 8bfb8814b6f..66eb303b1d7 100644 --- a/src/floatfns.c +++ b/src/floatfns.c @@ -73,9 +73,9 @@ Lisp_Object Qarith_error; #include <math.h> /* This declaration is omitted on some systems, like Ultrix. */ -#if !defined (HPUX) && defined (HAVE_LOGB) +#if !defined (HPUX) && defined (HAVE_LOGB) && !defined (logb) extern double logb (); -#endif /* not HPUX and HAVE_LOGB */ +#endif /* not HPUX and HAVE_LOGB and no logb macro */ #if defined(DOMAIN) && defined(SING) && defined(OVERFLOW) /* If those are defined, then this is probably a `matherr' machine. */ |