re PR middle-end/57219 (__builtin_isinf_sign source comments more restrictive than documentation)

2013-08-27  Marc Glisse  <marc.glisse@inria.fr>

	PR middle-end/57219
	* doc/extend.texi (__builtin_isinf_sign): Restrict the return
	values to -1, 0 and 1.

From-SVN: r202021

gcc/ChangeLog

+2013-08-27  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR middle-end/57219
+	* doc/extend.texi (__builtin_isinf_sign): Restrict the return
+	values to -1, 0 and 1.
+
 2013-08-27  Vidya Praveen  <vidyapraveen@arm.com>
 
 	* config/aarch64/aarch64.md (unspec): Add UNSPEC_SISD_SSHL,

gcc/doc/extend.texi

@@ -8618,8 +8618,9 @@ type is @code{long double}.
 @end deftypefn
 
 @deftypefn {Built-in Function} int __builtin_isinf_sign (...)
-Similar to @code{isinf}, except the return value is negative for
-an argument of @code{-Inf}.  Note while the parameter list is an
+Similar to @code{isinf}, except the return value is -1 for
+an argument of @code{-Inf} and 1 for an argument of @code{+Inf}.
+Note while the parameter list is an
 ellipsis, this function only accepts exactly one floating-point
 argument.  GCC treats this parameter as type-generic, which means it
 does not do default promotion from float to double.