2 * simple math operations
4 * Copyright (C) 2007 Marc Hoffman <mmhoffm@gmail.com>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_BFIN_MATHOPS_H
23 #define AVCODEC_BFIN_MATHOPS_H
27 #define MULH(X,Y) ({ int xxo; \
29 "a1 = %2.L * %1.L (FU);\n\t" \
30 "a1 = a1 >> 16;\n\t" \
31 "a1 += %2.H * %1.L (IS,M);\n\t" \
32 "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\
33 "a1 = a1 >>> 16;\n\t" \
34 "%0 = (a0 += a1);\n\t" \
35 : "=d" (xxo) : "d" (X), "d" (Y) : "A0","A1"); xxo; })
37 /* signed 16x16 -> 32 multiply */
38 #define MUL16(a, b) ({ int xxo; \
40 "%0 = %1.l*%2.l (is);\n\t" \
41 : "=W" (xxo) : "d" (a), "d" (b) : "A1"); \
44 #endif /* AVCODEC_BFIN_MATHOPS_H */