Jacek Caban : winmm: Introduce compare_uint helper.
Alexandre Julliard
julliard at winehq.org
Wed Jun 3 16:40:58 CDT 2020
Module: wine
Branch: master
Commit: 12f6e8086b7dcf7738953d4d2eeb63d310654447
URL: https://source.winehq.org/git/wine.git/?a=commit;h=12f6e8086b7dcf7738953d4d2eeb63d310654447
Author: Jacek Caban <jacek at codeweavers.com>
Date: Wed May 27 23:55:50 2020 +0200
winmm: Introduce compare_uint helper.
Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Andrew Eikum <aeikum at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/winmm/joystick.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/dlls/winmm/joystick.c b/dlls/winmm/joystick.c
index e844be1837..2b1811d377 100644
--- a/dlls/winmm/joystick.c
+++ b/dlls/winmm/joystick.c
@@ -55,6 +55,12 @@ typedef struct tagWINE_JOYSTICK {
static WINE_JOYSTICK JOY_Sticks[MAXJOYSTICK];
+static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
+{
+ unsigned int diff = x > y ? x - y : y - x;
+ return diff <= max_diff;
+}
+
/**************************************************************************
* JOY_LoadDriver [internal]
*/
@@ -106,14 +112,14 @@ static void CALLBACK JOY_Timer(HWND hWnd, UINT wMsg, UINT_PTR wTimer, DWORD dwTi
pos = MAKELONG(ji.wXpos, ji.wYpos);
if (!joy->bChanged ||
- abs(joy->ji.wXpos - ji.wXpos) > joy->threshold ||
- abs(joy->ji.wYpos - ji.wYpos) > joy->threshold) {
+ !compare_uint(joy->ji.wXpos, ji.wXpos, joy->threshold) ||
+ !compare_uint(joy->ji.wYpos, ji.wYpos, joy->threshold)) {
SendMessageA(joy->hCapture, MM_JOY1MOVE + i, ji.wButtons, pos);
joy->ji.wXpos = ji.wXpos;
joy->ji.wYpos = ji.wYpos;
}
if (!joy->bChanged ||
- abs(joy->ji.wZpos - ji.wZpos) > joy->threshold) {
+ !compare_uint(joy->ji.wZpos, ji.wZpos, joy->threshold)) {
SendMessageA(joy->hCapture, MM_JOY1ZMOVE + i, ji.wButtons, pos);
joy->ji.wZpos = ji.wZpos;
}
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