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document clip functions 

Originally committed as revision 5338 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2006-05-01 00:27:24 +00:00
parent 89ddb72aa1
commit 77177335f0
1 changed files with 12 additions and 0 deletions
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12
libavutil/common.h
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@ -427,6 +427,13 @@ static inline int mid_pred(int a, int b, int c)
#endif
}
/**
* clip a signed integer value into the amin-amax range
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
* @return cliped value
*/
static inline int clip(int a, int amin, int amax)
{
if (a < amin)
@ -437,6 +444,11 @@ static inline int clip(int a, int amin, int amax)
return a;
}
/**
* clip a signed integer value into the 0-255 range
* @param a value to clip
* @return cliped value
*/
static inline uint8_t clip_uint8(int a)
{
if (a&(~255)) return (-a)>>31;