diff --git a/m4/acinclude.m4 b/m4/acinclude.m4
index f1b611920503072d8556b39d33ea28c9a745a9aa..01eb4a41314c13686b811b4e332240c256a99dcc 100644 (file)
--- a/m4/acinclude.m4
+++ b/m4/acinclude.m4
#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
# 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;