[thirdparty/glibc.git] / sysdeps / i386 / fpu / s_truncf.S

/* Truncate float value.
   Copyright (C) 1997-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <machine/asm.h>
#include <libm-alias-float.h>

ENTRY(__truncf)
	flds	4(%esp)
	subl	$32, %esp
	cfi_adjust_cfa_offset (32)
	fnstenv	4(%esp)
	movl	$0xc00, %edx
	orl	4(%esp), %edx
	movl	%edx, (%esp)
	fldcw	(%esp)
	frndint
	fldenv	4(%esp)
	addl	$32, %esp
	cfi_adjust_cfa_offset (-32)
	ret
END(__truncf)
libm_alias_float (__trunc, trunc)
Commit	Line	Data
63551311	1	/* Truncate float value.
2b778ceb	2	Copyright (C) 1997-2021 Free Software Foundation, Inc.
63551311 UD	3	This file is part of the GNU C Library.
	4	Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
63551311 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
63551311	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6	17	License along with the GNU C Library; if not, see
5a82c748	18	<https://www.gnu.org/licenses/>. */
63551311 UD	19
63551311 UD	20	#include <machine/asm.h>
e4602cba	21	#include <libm-alias-float.h>
63551311 UD	22
	23	ENTRY(__truncf)
	24	flds 4(%esp)
30dcf959 JM	25	subl $32, %esp
	26	cfi_adjust_cfa_offset (32)
	27	fnstenv 4(%esp)
63551311 UD	28	movl $0xc00, %edx
	29	orl 4(%esp), %edx
	30	movl %edx, (%esp)
	31	fldcw (%esp)
	32	frndint
30dcf959 JM	33	fldenv 4(%esp)
	34	addl $32, %esp
	35	cfi_adjust_cfa_offset (-32)
63551311 UD	36	ret
63551311 UD	37	END(__truncf)
e4602cba	38	libm_alias_float (__trunc, trunc)