1 | /* Truncate long 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 <libm-alias-ldouble.h> |
20 | #include <machine/asm.h> |
21 | |
22 | ENTRY(__truncl) |
23 | fldt 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 | fnstsw |
33 | andl $0x1, %eax |
34 | orl %eax, 8(%esp) |
35 | fldenv 4(%esp) |
36 | addl $32, %esp |
37 | cfi_adjust_cfa_offset (-32) |
38 | ret |
39 | END(__truncl) |
40 | libm_alias_ldouble (__trunc, trunc) |
41 | |