X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=m4%2Facinclude.m4;h=01eb4a41314c13686b811b4e332240c256a99dcc;hp=f1b611920503072d8556b39d33ea28c9a745a9aa;hb=f0a82ae15cafb6ad47ea0c9f74754820e92e2078;hpb=71db1316eb097bcad2005ca95f430b9ecedaa760

diff --git a/m4/acinclude.m4 b/m4/acinclude.m4
index f1b6119..01eb4a4 100644
--- a/m4/acinclude.m4
+++ b/m4/acinclude.m4
@@ -363,13 +363,13 @@ AC_CACHE_VAL([rd_cv_ieee_$2],
 #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
 
 /* 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 
@@ -390,6 +390,10 @@ AC_CACHE_VAL([rd_cv_ieee_$2],
 #  define isinf(a) (fpclassify(a) == FP_INFINITE)
 #endif
 
+#if HAVE_MATH_H
+#include <math.h>
+#endif
+
 #include <stdio.h>
 int main(void){
     double rrdnan,rrdinf,rrdc,rrdzero;