Ensure oscillator step fits within lookup bounds

2010-01-13 13:57:41 +00:00 · 2010-01-13 13:57:41 +00:00 · ba6cb260a4
parent 864e4d1431
commit ba6cb260a4
1 changed files with 3 additions and 0 deletions
--- a/osc.c
+++ b/osc.c
@ -28,5 +28,8 @@ void osc_setfreq(struct osc_t *osc, double freq)
 {
 	osc->freq = freq;
 	osc->step = freq / _sample_rate * LOOKUP_SAMPLES;
+
+	/* Ensure step does not go out of bound */
+	while (osc->step > LOOKUP_SAMPLES) osc->step -= LOOKUP_SAMPLES;
 }