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| author | Joshua Colp <jcolp@digium.com> | 2007-08-29 02:21:08 +0000 |
|---|---|---|
| committer | Joshua Colp <jcolp@digium.com> | 2007-08-29 02:21:08 +0000 |
| commit | 440aab5ffacd1fdc1213605431e9dc46bab04d64 (patch) | |
| tree | 8b8700fa35228cfb3c3c08c2895bc2b306537e6c /include/asterisk/utils.h | |
| parent | 225d9166ec349df97b5e4b9da9199085ae59a5c2 (diff) | |
Add inline function for signed linear subtraction.
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@81326 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'include/asterisk/utils.h')
| -rw-r--r-- | include/asterisk/utils.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asterisk/utils.h b/include/asterisk/utils.h index 6f97770d9..d87ea0339 100644 --- a/include/asterisk/utils.h +++ b/include/asterisk/utils.h @@ -283,6 +283,19 @@ static force_inline void ast_slinear_saturated_add(short *input, short *value) else *input = (short) res; } + +static force_inline void ast_slinear_saturated_subtract(short *input, short *value) +{ + int res; + + res = (int) *input - *value; + if (res > 32767) + *input = 32767; + else if (res < -32767) + *input = -32767; + else + *input = (short) res; +} static force_inline void ast_slinear_saturated_multiply(short *input, short *value) { |