X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_config_bottom.h;h=a569197ab9a8b709f0135895ad88b60248648852;hb=2c16b54029a3f5f08899c15d82c78a3a23d99e94;hp=ec191b9e0f7ced35c116061c9a02b9be474d7ef9;hpb=734d64e1e4744aa0994cc7956263ac72e3d42eb1;p=rrdtool.git

diff --git a/src/rrd_config_bottom.h b/src/rrd_config_bottom.h
index ec191b9..a569197 100644
--- a/src/rrd_config_bottom.h
+++ b/src/rrd_config_bottom.h
@@ -175,17 +175,18 @@ char *strchr (), *strrchr ();
 #  ifdef isinf
 #  undef isinf
 #  endif
-#  define isinf(a) (fpclass(a) == FP_NINF || fpclass(a) == FP_PINF)
+#  define isinf(a) (!!(fpclass(a) & (FP_SNAN|FP_QNAN)))
+
 #endif
 
 /* solaris 10 it defines isnan such that only forte can compile it ... bad bad  */
-#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS))
+#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS) && defined(FP_SNAN) && defined(FP_QNAN))
 #  undef isnan
 #  define isnan(a) (fpclass(a) == FP_SNAN || fpclass(a) == FP_QNAN)
 #endif
 
 /* for OSF1 Digital Unix */
-#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H))
+#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H) && defined(FP_NEG_INF) && defined( FP_POS_INF))
 #  define HAVE_ISINF 1
 #  define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
 #endif