gcc/gcc ChangeLog real.c real.h builtins.c

[sayle@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2004-01-23 16:16:38

Modified files:
	gcc            : ChangeLog real.c real.h builtins.c 

Log message:
	* real.c (real_floor, real_ceil): Tweak to allow input and output
	arguments to overlap.
	(real_round): New function to implement round(3m) semantics.
	* real.h (real_round): Prototype here.
	* builtins.c (fold_builtin_round): New function to constant fold
	round, roundf and roundl.
	(fold_builtin): Call fold_builtin_round for BUILT_IN_ROUND{,F,L}.
	
	* gcc.dg/builtins-29.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.2431&r2=2.2432
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.c.diff?cvsroot=gcc&r1=1.135&r2=1.136
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.h.diff?cvsroot=gcc&r1=1.75&r2=1.76
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.277&r2=1.278