1/* trunc for SSE4.1.
2 Copyright (C) 2017-2024 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 <sysdep.h>
20
21#include <sysdeps/x86/isa-level.h>
22#if MINIMUM_X86_ISA_LEVEL == SSE4_1_X86_ISA_LEVEL
23# include <libm-alias-double.h>
24# define __trunc_sse41 __trunc
25 .text
26#else
27 .section .text.sse4.1,"ax",@progbits
28#endif
29
30ENTRY(__trunc_sse41)
31 roundsd $11, %xmm0, %xmm0
32 ret
33END(__trunc_sse41)
34
35#if MINIMUM_X86_ISA_LEVEL == SSE4_1_X86_ISA_LEVEL
36libm_alias_double (__trunc, trunc)
37#endif
38

source code of glibc/sysdeps/x86_64/fpu/multiarch/s_trunc-sse4_1.S