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Add a macro to get the number of elements in a table.

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Originally committed as revision 15619 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benoit Fouet
2008-10-15 07:24:54 +00:00
parent e46a98271e
commit ac809e814e
1 changed files with 1 additions and 0 deletions
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libavutil/common.h
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@@ -116,6 +116,7 @@
#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c) #define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0) #define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
/* misc math functions */ /* misc math functions */
extern const uint8_t ff_log2_tab[256]; extern const uint8_t ff_log2_tab[256];