1/* Truncate long double value.
2 Copyright (C) 1997-2020 Free Software Foundation, Inc.
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
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.
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
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <libm-alias-ldouble.h>
21#include <machine/asm.h>
22
23ENTRY(__truncl)
24 fldt 8(%rsp)
25 fnstenv -28(%rsp)
26 movl $0xc00, %edx
27 orl -28(%rsp), %edx
28 movl %edx, -32(%rsp)
29 fldcw -32(%rsp)
30 frndint
31 fnstsw
32 andl $0x1, %eax
33 orl %eax, -24(%rsp)
34 fldenv -28(%rsp)
35 ret
36END(__truncl)
37libm_alias_ldouble (__trunc, trunc)
38