system/lib/lcd/gui/Core/GUI__DivideRound32.c

48 lines
1.6 KiB
C

/*
*********************************************************************************************************
* uC/GUI
* Universal graphic software for embedded applications
*
* (c) Copyright 2002, Micrium Inc., Weston, FL
* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
* µC/GUI is protected by international copyright laws. Knowledge of the
* source code may not be used to write a similar product. This file may
* only be used in accordance with a license and should not be redistributed
* in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File : GUI__DivideRound32.C
Purpose : Implementation of GUI__DivideRound32
---------------------------END-OF-HEADER------------------------------
*/
#include "GUI_Protected.h"
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* GUI__DivideRound32
*
* This routine is used internally for computations. Primary goal is
* to minimize the effects of rounding which occur if we simply
* divide.
*/
I32 GUI__DivideRound32(I32 a, I32 b) {
if (b) {
if (a < 0) {
return (a - (b >> 1)) / b;
} else {
return (a + (b >> 1)) / b;
}
}
return 0;
}
/*************************** End of file ****************************/