From 67e518b2711520d98018963be8be9d97f849411c Mon Sep 17 00:00:00 2001
From: dinkc64 <12570148+dinkc64@users.noreply.github.com>
Date: Tue, 2 Dec 2014 18:17:23 +0000
Subject: [PATCH] Fix clipping/static in several NeoGeo games (Art of Fighting,
 Football Frenzy and more) with FM interpolation on

---
 src/burn/snd/burn_ym2610.cpp | 2 +-
 src/burn/snd/ym2151.c        | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/burn/snd/burn_ym2610.cpp b/src/burn/snd/burn_ym2610.cpp
index f9a40ddcc..55f89fabb 100644
--- a/src/burn/snd/burn_ym2610.cpp
+++ b/src/burn/snd/burn_ym2610.cpp
@@ -121,7 +121,7 @@ static void YM2610UpdateResample(INT16* pSoundBuf, INT32 nSegmentEnd)
 	pYM2610Buffer[5] = pBuffer + 5 * 4096 + 4;
 
 	for (INT32 i = (nFractionalPosition >> 16) - 4; i < nSamplesNeeded; i++) {
-		pYM2610Buffer[5][i] = pYM2610Buffer[2][i] + pYM2610Buffer[3][i] + pYM2610Buffer[4][i];
+		pYM2610Buffer[5][i] = BURN_SND_CLIP(pYM2610Buffer[2][i] + pYM2610Buffer[3][i] + pYM2610Buffer[4][i]);
 	}
 
 	for (INT32 i = (nFractionalPosition & 0xFFFF0000) >> 15; i < nSegmentLength; i += 2, nFractionalPosition += nSampleSize) {
diff --git a/src/burn/snd/ym2151.c b/src/burn/snd/ym2151.c
index 90496353a..2b7666740 100644
--- a/src/burn/snd/ym2151.c
+++ b/src/burn/snd/ym2151.c
@@ -583,9 +583,9 @@ static void init_tables(void)
 		/* we never reach zero here due to ((i*2)+1) */
 
 		if (m>0.0)
-			o = 8*log(1.0/m)/log(2);	/* convert to 'decibels' */
+			o = 8*log(1.0/m)/log(2.0);	/* convert to 'decibels' */
 		else
-			o = 8*log(-1.0/m)/log(2);	/* convert to 'decibels' */
+			o = 8*log(-1.0/m)/log(2.0);	/* convert to 'decibels' */
 
 		o = o / (ENV_STEP/4);