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authorUlrich Drepper <drepper@redhat.com>2008-11-01 02:28:57 +0000
committerUlrich Drepper <drepper@redhat.com>2008-11-01 02:28:57 +0000
commitacd44dbc7a0e6001406eb9e46eecab3ae34d9966 (patch)
tree8ee36c5c78e8e58489707450eebfdc3a52a2530f /math
parentbf837fa36ff39d077b09ce592b1c4c38592586c1 (diff)
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2008-10-24 Joseph Myers <joseph@codesourcery.com>
Ulrich Drepper <drepper@redhat.com> * math/tgmath.h (__floating_type): Use __builtin_classify_type in definition for GCC 3.1 and later.
Diffstat (limited to 'math')
-rw-r--r--math/tgmath.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/math/tgmath.h b/math/tgmath.h
index 4f45aaa..eefdd26 100644
--- a/math/tgmath.h
+++ b/math/tgmath.h
@@ -48,7 +48,14 @@
/* 1 if 'type' is a floating type, 0 if 'type' is an integer type.
Allows for _Bool. Expands to an integer constant expression. */
-# define __floating_type(type) (((type) 0.25) && ((type) 0.25 - 1))
+# if __GNUC_PREREQ (3, 1)
+# define __floating_type(type) \
+ (__builtin_classify_type ((type) 0) == 8 \
+ || (__builtin_classify_type ((type) 0) == 9 \
+ && __builtin_classify_type (__real__ ((type) 0)) == 8))
+# else
+# define __floating_type(type) (((type) 0.25) && ((type) 0.25 - 1))
+# endif
/* The tgmath real type for T, where E is 0 if T is an integer type and
1 for a floating type. */