From 4e9dcd7fcb8c6710b343f81ff89d691a0fd1a5e6 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Tue, 25 Oct 2011 01:44:12 +0300
Subject: [PATCH] drc: fix cycle multiplier code

rounding wrong way is enough to cause nasty timing problems
---
 libpcsxcore/new_dynarec/new_dynarec.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index 5e6e66e6..fb39cf09 100644
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -44,9 +44,6 @@
 #define MAXBLOCK 4096
 #define MAX_OUTPUT_BLOCK_SIZE 262144
 
-int cycle_multiplier; // 100 for 1.0
-#define CLOCK_ADJUST(x) (((x) * cycle_multiplier + 50) / 100)
-
 struct regstat
 {
   signed char regmap_entry[HOST_REGS];
@@ -279,6 +276,14 @@ int tracedebug=0;
 
 //#define DEBUG_CYCLE_COUNT 1
 
+int cycle_multiplier; // 100 for 1.0
+
+static int CLOCK_ADJUST(int x)
+{
+  int s=(x>>31)|1;
+  return (x * cycle_multiplier + s * 50) / 100;
+}
+
 static void tlb_hacks()
 {
 #ifndef DISABLE_TLB
-- 
2.39.5