Make proper autoconf test for availability of posix nan function instead of fudging with the NAN macro.

darcs-hash:20090202232049-ac50b-0176955677ff39fdd05eeefa20dca883863c34e6.gz

1 files changed, 7 insertions, 0 deletions

diff --git a/fallback.c b/fallback.c
index af719cf5..004e198f 100644
--- a/fallback.c
+++ b/fallback.c
@@ -1183,5 +1183,12 @@ long sysconf(int name)
 	return -1;
 	
 }
+#endif
 
+#ifndef HAVE_NAN
+double nan(char *tagp)
+{
+	return 0.0/0.0;
+}
 #endif
+