From ba6cb260a4de3df71a02db6f2a3fe099db36f7d6 Mon Sep 17 00:00:00 2001
From: Peter Nelson <peter@fuzzle.org>
Date: Wed, 13 Jan 2010 13:57:41 +0000
Subject: [PATCH] Ensure oscillator step fits within lookup bounds

---
 osc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/osc.c b/osc.c
index 218cac9..92ca612 100644
--- 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;
 }