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-rw-r--r--src/devices/cpu/dsp16/dsp16core.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/cpu/dsp16/dsp16core.h b/src/devices/cpu/dsp16/dsp16core.h
index 5268c2815d7..6eb14f5aef4 100644
--- a/src/devices/cpu/dsp16/dsp16core.h
+++ b/src/devices/cpu/dsp16/dsp16core.h
@@ -38,7 +38,7 @@ public:
s16 &yaau_set_k(s16 value) { return yaau_k = yaau_extend(value); }
u16 &yaau_set_rb(s16 value) { return yaau_rb = value & yaau_mask; }
u16 &yaau_set_re(s16 value) { return yaau_re = value & yaau_mask; }
- constexpr s16 yaau_extend(s16 value) { return (value & yaau_mask) | ((value & yaau_sign) ? ~yaau_mask : 0); }
+ constexpr s16 yaau_extend(s16 value) const { return (value & yaau_mask) | ((value & yaau_sign) ? ~yaau_mask : 0); }
s16 &yaau_extend_j() { return yaau_j = yaau_extend(yaau_j); }
s16 &yaau_extend_k() { return yaau_k = yaau_extend(yaau_k); }