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[base] Optimize `FT_Angle_Diff'. 

Under normal circumstances we are usually close to the desired range
of angle values, so that the remainder is not really necessary.

* src/base/fttrigon.c (FT_Angle_Diff): Use loops instead of remainder.

* src/autofit/aftypes.h (AF_ANGLE_DIFF): Ditto in the unused macro.
This commit is contained in:
Alexei Podtelezhnikov 2015-03-21 23:30:16 -04:00
parent 6cc425db91
commit dac5644cea
3 changed files with 15 additions and 6 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2015-03-21 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Optimize `FT_Angle_Diff'.
Under normal circumstances we are usually close to the desired range
of angle values, so that the remainder is not really necessary.
* src/base/fttrigon.c (FT_Angle_Diff): Use loops instead of remainder.
* src/autofit/aftypes.h (AF_ANGLE_DIFF): Ditto in the unused macro.
2015-03-21 Werner Lemberg <wl@gnu.org> 2015-03-21 Werner Lemberg <wl@gnu.org>
[truetype] Improve `gvar' handling. [truetype] Improve `gvar' handling.

5
src/autofit/aftypes.h
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@ -138,11 +138,10 @@ extern void* _af_debug_hints;
AF_Angle _delta = (angle2) - (angle1); \ AF_Angle _delta = (angle2) - (angle1); \
\ \
\ \
_delta %= AF_ANGLE_2PI; \ while ( _delta <= -AF_ANGLE_PI ) \
if ( _delta < 0 ) \
_delta += AF_ANGLE_2PI; \ _delta += AF_ANGLE_2PI; \
\ \
if ( _delta > AF_ANGLE_PI ) \ while ( _delta > AF_ANGLE_PI ) \
_delta -= AF_ANGLE_2PI; \ _delta -= AF_ANGLE_2PI; \
\ \
result = _delta; \ result = _delta; \

5
src/base/fttrigon.c
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@ -512,11 +512,10 @@
FT_Angle delta = angle2 - angle1; FT_Angle delta = angle2 - angle1;
delta %= FT_ANGLE_2PI; while ( delta <= -FT_ANGLE_PI )
if ( delta < 0 )
delta += FT_ANGLE_2PI; delta += FT_ANGLE_2PI;
if ( delta > FT_ANGLE_PI ) while ( delta > FT_ANGLE_PI )
delta -= FT_ANGLE_2PI; delta -= FT_ANGLE_2PI;
return delta; return delta;