diff options
Diffstat (limited to 'tests/tiny_psnr.c')
-rw-r--r-- | tests/tiny_psnr.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/tests/tiny_psnr.c b/tests/tiny_psnr.c index 2bdb439..512d47b 100644 --- a/tests/tiny_psnr.c +++ b/tests/tiny_psnr.c @@ -1,20 +1,20 @@ /* * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -52,6 +52,21 @@ uint64_t exp16_table[21]={ 582360139072LL, }; +#if 0 +// 16.16 fixpoint exp() +static unsigned int exp16(unsigned int a){ + int i; + int out= 1<<16; + + for(i=19;i>=0;i--){ + if(a&(1<<i)) + out= (out*exp16_table[i] + (1<<15))>>16; + } + + return out; +} +#endif + // 16.16 fixpoint log() static int64_t log16(uint64_t a){ int i; |