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revert r12489.

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Originally committed as revision 12490 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benoit Fouet
2008-03-18 16:29:47 +00:00
parent 6544f48f03
commit 2119bb8f51
13 changed files with 55 additions and 78 deletions
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18
libavutil/softfloat.h
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@ -32,7 +32,7 @@ typedef struct SoftFloat{
int32_t mant;
}SoftFloat;
static av_const SoftFloat av_normalize_sf(SoftFloat a){
static SoftFloat av_normalize_sf(SoftFloat a){
if(a.mant){
#if 1
while((a.mant + 0x20000000U)<0x40000000U){
@ -54,7 +54,7 @@ static av_const SoftFloat av_normalize_sf(SoftFloat a){
return a;
}
static inline av_const SoftFloat av_normalize1_sf(SoftFloat a){
static inline SoftFloat av_normalize1_sf(SoftFloat a){
#if 1
if(a.mant + 0x40000000 < 0){
a.exp++;
@ -76,7 +76,7 @@ static inline av_const SoftFloat av_normalize1_sf(SoftFloat a){
* normalized then the output wont be worse then the other input
* if both are normalized then the output will be normalized
*/
static inline av_const SoftFloat av_mul_sf(SoftFloat a, SoftFloat b){
static inline SoftFloat av_mul_sf(SoftFloat a, SoftFloat b){
a.exp += b.exp;
a.mant = (a.mant * (int64_t)b.mant) >> ONE_BITS;
return av_normalize1_sf(a);
@ -87,31 +87,31 @@ static inline av_const SoftFloat av_mul_sf(SoftFloat a, SoftFloat b){
* b has to be normalized and not zero
* @return will not be more denormalized then a
*/
static av_const SoftFloat av_div_sf(SoftFloat a, SoftFloat b){
static SoftFloat av_div_sf(SoftFloat a, SoftFloat b){
a.exp -= b.exp+1;
a.mant = ((int64_t)a.mant<<(ONE_BITS+1)) / b.mant;
return av_normalize1_sf(a);
}
static inline av_const int av_cmp_sf(SoftFloat a, SoftFloat b){
static inline int av_cmp_sf(SoftFloat a, SoftFloat b){
int t= a.exp - b.exp;
if(t<0) return (a.mant >> (-t)) - b.mant ;
else return a.mant - (b.mant >> t);
}
static inline av_const SoftFloat av_add_sf(SoftFloat a, SoftFloat b){
static inline SoftFloat av_add_sf(SoftFloat a, SoftFloat b){
int t= a.exp - b.exp;
if(t<0) return av_normalize1_sf((SoftFloat){b.exp, b.mant + (a.mant >> (-t))});
else return av_normalize1_sf((SoftFloat){a.exp, a.mant + (b.mant >> t )});
}
static inline av_const SoftFloat av_sub_sf(SoftFloat a, SoftFloat b){
static inline SoftFloat av_sub_sf(SoftFloat a, SoftFloat b){
return av_add_sf(a, (SoftFloat){b.exp, -b.mant});
}
//FIXME sqrt, log, exp, pow, sin, cos
static inline av_const SoftFloat av_int2sf(int v, int frac_bits){
static inline SoftFloat av_int2sf(int v, int frac_bits){
return av_normalize_sf((SoftFloat){ONE_BITS-frac_bits, v});
}
@ -119,7 +119,7 @@ static inline av_const SoftFloat av_int2sf(int v, int frac_bits){
*
* rounding is to -inf
*/
static inline av_const int av_sf2int(SoftFloat v, int frac_bits){
static inline int av_sf2int(SoftFloat v, int frac_bits){
v.exp += frac_bits - ONE_BITS;
if(v.exp >= 0) return v.mant << v.exp ;
else return v.mant >>(-v.exp);