gui__divideround32.c

来自「MCB2300_ucgui_LCD320240.rar LPC2368的u」· C语言 代码 · 共 53 行

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/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 ****************************/