-
-/* for Solaris */
-#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASS))
-# define HAVE_ISINF 1
-# define isinf(a) (fpclass(a) == FP_NINF || fpclass(a) == FP_PINF)
-#endif
-
-/* solaris 10 it defines isnan such that only forte can compile it ... bad bad */
-#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS))
-# 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))
-# define HAVE_ISINF 1
-# define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
-#endif
-
-#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_PLUS_INF) && defined(FP_MINUS_INF))
-# define HAVE_ISINF 1
-# define isinf(a) (fpclassify(a) == FP_MINUS_INF || fpclassify(a) == FP_PLUS_INF)
-#endif
-
-#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_INFINITE))
-# define HAVE_ISINF 1
-# define isinf(a) (fpclassify(a) == FP_INFINITE)
-#endif
-
-/* for AIX */
-#if (! defined(HAVE_ISINF) && defined(HAVE_CLASS))
-# define HAVE_ISINF 1
-# define isinf(a) (class(a) == FP_MINUS_INF || class(a) == FP_PLUS_INF)
-#endif
-
-#if (! defined (HAVE_FINITE) && defined (HAVE_ISFINITE))
-# define HAVE_FINITE 1
-# define finite(a) isfinite(a)
-#endif
-
-#if (! defined(HAVE_FINITE) && defined(HAVE_ISNAN) && defined(HAVE_ISINF))
-# define HAVE_FINITE 1
-# define finite(a) (! isnan(a) && ! isinf(a))
-#endif
-
-#ifndef HAVE_FINITE
-#error "Can't compile without finite function"
-#endif
-
-#ifndef HAVE_ISINF
-#error "Can't compile without isinf function"
-#endif
-
-#endif /* RRD_CONFIG_H */