avutil/softfloat: Fix sign error in and improve documentation of av_int2sf()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-04 20:45:09 +02:00
parent 67162554d4
commit 6019d721d4
1 changed files with 4 additions and 2 deletions

View File

@ -176,8 +176,10 @@ static inline av_const SoftFloat av_sub_sf(SoftFloat a, SoftFloat b){
//FIXME log, exp, pow
/**
* Converts a mantisse and exponent to a SoftFloat
* @returns a SoftFloat with value v * 2^frac_bits
* Converts a mantisse and exponent to a SoftFloat.
* This converts a fixed point value v with frac_bits fractional bits to a
* SoftFloat.
* @returns a SoftFloat with value v * 2^-frac_bits
*/
static inline av_const SoftFloat av_int2sf(int v, int frac_bits){
int exp_offset = 0;