#include <ctype.h>
#include <math.h>
-#if STDC_HEADERS
+#ifdef HAVE_FLOAT_H
#include <float.h>
+#else
+#define DBL_MAX 1.7976931348623159e+308
+#define DBL_MIN 2.2250738585072010e-308
+#endif
+#endif
+
+#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#else
#define NULL 0
-#define DBL_MAX 1.7976931348623159e+308
-#define DBL_MIN 2.2250738585072010e-308
extern int errno;
-#endif
#ifndef HUGE_VAL
#define HUGE_VAL HUGE
#endif