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| author | Michael Niedermayer <michaelni@gmx.at> | 2002-08-22 19:41:39 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2002-08-22 19:41:39 +0000 |
| commit | f36db5dfd3c3cfd5d2e9feb0462c18431183cff5 (patch) | |
| tree | dd74494896ac8b73d360250d263229b5f3a8e573 /libavcodec/common.c | |
| parent | 1fb4890b5195db4de31733a234abb946f9399f3e (diff) | |
| download | ffmpeg-f36db5dfd3c3cfd5d2e9feb0462c18431183cff5.tar.gz | |
faster ff_sqrt()
Originally committed as revision 859 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/common.c')
| -rw-r--r-- | libavcodec/common.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/common.c b/libavcodec/common.c index 63d17b6c2b..fde12d9270 100644 --- a/libavcodec/common.c +++ b/libavcodec/common.c @@ -20,6 +20,13 @@ */ #include "avcodec.h" +const UINT8 ff_sqrt_tab[128]={ + 0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11 +}; + void init_put_bits(PutBitContext *s, UINT8 *buffer, int buffer_size, void *opaque, |