backport FP_* fixes and revert FPCLASSIFY fix since there the FP_* values are defines.

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@2101 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_config_bottom.h b/src/rrd_config_bottom.h
index 4bf9d9cfcddc6a1442108a0d89ea5ac95433a9cc..90ecc8e9f2b45a03200554dd0cbb97cd101b41ae 100644 (file)
--- a/src/rrd_config_bottom.h
+++ b/src/rrd_config_bottom.h
@@ -190,12 +190,12 @@ char *strchr (), *strrchr ();
 #  define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
 #endif
 
-#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY))
+#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_MINUS_INF) && defined(FP_PLUS_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))
+#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_INFINITE))
 #  define HAVE_ISINF 1
 #  define isinf(a) (fpclassify(a) == FP_INFINITE)
 #endif