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authorUlrich Drepper <drepper@redhat.com>1998-08-31 16:30:27 +0000
committerUlrich Drepper <drepper@redhat.com>1998-08-31 16:30:27 +0000
commitbfce746a87e205a682b85e144e056029a8a30d07 (patch)
tree081313643ad086d15559161dc218d203b62f605d /math/math.h
parentac72fbb190675473855c33d79ccd75b0de68c0d1 (diff)
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Update.
1998-08-31 15:56  Ulrich Drepper  <drepper@cygnus.com>

	* db2/db_int.h: Use <db.h> instead of "db.h" to find header in include.

	* include/stdio.h: Add __vsscanf.

	* libio/stdio.h: Make vfscanf, scanf, and vsscanf available if
	__USE_ISOC9X.
	Remove __vsscanf declaration.
	Always declare fgetpos and fsetpos.

	* math/math.h: Define isinf as macro.
	* math/bits/mathcalls.h: Change to declare __isinf all the time.
	Don't declare scalb for ISO C 9x.

	* math/tgmath.h: Define fma.  Rewrite the underlying macros.

	* stdlib/stdlib.h: Declare strtof and strtold is __USE_ISOC9X.

	* sysdeps/unix/sysv/linux/bits/sigcontext.h: Allow inclusion from
	sys/ucontext.h.

	* sysdeps/wordsize-32/inttypes.h: Define missing PRI* and SCN*
	macros.

1998-08-31  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/standalone/bits/errno.h (ENOMSG): Remove duplicate.
	Reported by jreising@frequentis.com [PR libc/767].

1998-08-31  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* io/lockf.c (lockf): Move initilisation of fl.l_whence and
	fl.l_start at beginning of function.
	Patch by Geoff. Dash <geoffd@zeta.org.au> [PR libc/769].
Diffstat (limited to 'math/math.h')
-rw-r--r--math/math.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/math/math.h b/math/math.h
index 5381f29e9a..d7487dda4a 100644
--- a/math/math.h
+++ b/math/math.h
@@ -196,6 +196,13 @@ enum
       : sizeof (x) == sizeof (double) ?					      \
         __isnan (x) : __isnanl (x))
 
+/* Return nonzero value is X is positive or negative infinity.  */
+# define isinf(x) \
+     (sizeof (x) == sizeof (float) ?					      \
+        __isinff (x)							      \
+      : sizeof (x) == sizeof (double) ?					      \
+        __isinf (x) : __isinfl (x))
+
 #endif /* Use ISO C 9X.  */
 
 #ifdef	__USE_MISC