diff options
Diffstat (limited to 'usr/src/libm/src/i386/common/copysignf.s')
| -rw-r--r-- | usr/src/libm/src/i386/common/copysignf.s | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/usr/src/libm/src/i386/common/copysignf.s b/usr/src/libm/src/i386/common/copysignf.s new file mode 100644 index 0000000..63527ef --- /dev/null +++ b/usr/src/libm/src/i386/common/copysignf.s @@ -0,0 +1,47 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + + .ident "@(#)copysignf.s 1.3 06/01/23 SMI" + + .file "copysignf.s" + +#include "libm.h" +LIBM_ANSI_PRAGMA_WEAK(copysignf,function) +#include "libm_synonyms.h" + + ENTRY(copysignf) + movl 4(%esp),%eax / eax <-- x + movl 8(%esp),%ecx / ecx <-- y + andl $0x7fffffff,%eax / eax <-- abs(x) + andl $0x80000000,%ecx / ecx[31] <-- sign_bit(y) + orl %ecx,%eax / eax <-- copysign(x,y) + subl $4,%esp / set up loading dock for result + movl %eax,(%esp) / copy result to loading dock + flds (%esp) / load copysign(x,y) + fwait / in case fldl causes exception + addl $4,%esp / restore stack-pointer for return + ret + .align 4 + SET_SIZE(copysignf) |