index d207abbe2b35d5939d2960071e63b8156fe61e82..dff8026d066f3e42443cdab1c89b2c1f07d39321 100644 (file)
--- a/program/m4/acinclude.m4
+++ b/program/m4/acinclude.m4
# 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;