# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1169075930 18000
# Node ID 23aac9d422347399d44df9131af131bd2b7fd7a6
# Parent  e82ae73acbd7a2402d994d8260d8e088ca92e429
Turn a memmove into a while(), reducing running time by 3.5% in my tests.

diff -r e82ae73acbd7 -r 23aac9d42234 lib/bunzip.c
--- a/lib/bunzip.c	Wed Jan 17 16:58:51 2007 -0500
+++ b/lib/bunzip.c	Wed Jan 17 18:18:50 2007 -0500
@@ -346,7 +346,9 @@
 		if (dbufCount>=dbufSize) return RETVAL_DATA_ERROR;
 		i = nextSym - 1;
 		uc = mtfSymbol[i];
-		memmove(mtfSymbol+1, mtfSymbol, i);
+		// On my laptop, unrolling this memmove() into a loop costs 11 bytes
+		// but shaves 3.5% off the total running time.
+		while(i--) mtfSymbol[i+1] = mtfSymbol[i];
 		mtfSymbol[0] = uc;
 		uc = symToByte[uc];