1/* Truncate double value.
2   Copyright (C) 1997-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <machine/asm.h>
20#include <libm-alias-double.h>
21
22ENTRY(__trunc)
23	fldl	4(%esp)
24	subl	$32, %esp
25	cfi_adjust_cfa_offset (32)
26	fnstenv	4(%esp)
27	movl	$0xc00, %edx
28	orl	4(%esp), %edx
29	movl	%edx, (%esp)
30	fldcw	(%esp)
31	frndint
32	fldenv	4(%esp)
33	addl	$32, %esp
34	cfi_adjust_cfa_offset (-32)
35	ret
36END(__trunc)
37libm_alias_double (__trunc, trunc)
38