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path: root/sound/softsynth/fmtowns_pc98/towns_audio.cpp
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Diffstat (limited to 'sound/softsynth/fmtowns_pc98/towns_audio.cpp')
-rw-r--r--sound/softsynth/fmtowns_pc98/towns_audio.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/softsynth/fmtowns_pc98/towns_audio.cpp b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
index ea5797baec..773c5a8067 100644
--- a/sound/softsynth/fmtowns_pc98/towns_audio.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
@@ -1303,7 +1303,7 @@ void TownsAudioInterface::pcmCalcPhaseStep(TownsAudio_PcmChannel *p, TownsAudio_
uint32 s = 0;
if (diff < 0) {
- diff -= 1;
+ diff *= -1;
bl = diff % 12;
diff /= 12;
s = (r >> diff);