2
* simple math operations
3
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
5
* This file is part of FFmpeg.
7
* FFmpeg is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU Lesser General Public
9
* License as published by the Free Software Foundation; either
10
* version 2.1 of the License, or (at your option) any later version.
12
* FFmpeg is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15
* Lesser General Public License for more details.
17
* You should have received a copy of the GNU Lesser General Public
18
* License along with FFmpeg; if not, write to the Free Software
19
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23
# define MULL(ra, rb) \
24
({ int rt, dummy; asm (\
26
"shrdl %4, %%edx, %%eax \n\t"\
27
: "=a"(rt), "=d"(dummy)\
28
: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
32
#define MULH(ra, rb) \
34
asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb));\
37
#define MUL64(ra, rb) \
39
asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb));\