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diff tests/test-math.c @ 16763:a56cad559c24

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math: Provide FP_ILOGB0 and FP_ILOGBNAN. * lib/math.in.h (FP_ILOGB0, FP_ILOGBNAN): Define fallback. * tests/test-math.c: Check that FP_ILOGB0, FP_ILOGBNAN are defined. (main): Check their values. * doc/posix-headers/math.texi: Mention the FP_ILOGB0, FP_ILOGBNAN problem.
author Bruno Haible <bruno@clisp.org>
date Tue, 03 Apr 2012 17:04:46 +0200 (2012-04-03)
parents af909bf507e4
children e542fd46ad6f
line wrap: on
line diff
--- a/tests/test-math.c
+++ b/tests/test-math.c
@@ -40,6 +40,18 @@
 choke me
 #endif
 
+#ifndef FP_ILOGB0
+# error FP_ILOGB0 should be defined
+choke me
+#endif
+
+#ifndef FP_ILOGBNAN
+# error FP_ILOGBNAN should be defined
+choke me
+#endif
+
+#include <limits.h>
+
 #include "macros.h"
 
 #if 0
@@ -82,5 +94,11 @@
 
   ASSERT (numeric_equall (HUGE_VALL, HUGE_VALL + HUGE_VALL));
 
+  /* Check the value of FP_ILOGB0.  */
+  ASSERT (FP_ILOGB0 == INT_MIN || FP_ILOGB0 == - INT_MAX);
+
+  /* Check the value of FP_ILOGBNAN.  */
+  ASSERT (FP_ILOGBNAN == INT_MIN || FP_ILOGBNAN == INT_MAX);
+
   return 0;
 }