rt-thread/filesystem/dfs/filesystems/efsl/src/base/plibc.c

/*****************************************************************************\
*                     EFSL - Embedded Filesystems Library                     *
*                     -----------------------------------                     *
*                                                                             *
* Filename : plibc.c                                                          *
* Release  : 0.3 - devel                                                      *
* Description : This file contains replacements of common c library functions *
*                                                                             *
* This program is free software; you can redistribute it and/or               *
* modify it under the terms of the GNU General Public License                 *
* as published by the Free Software Foundation; version 2                     *
* of the License.                                                             *
*                                                                             *
* This program is distributed in the hope that it will be useful,             *
* but WITHOUT ANY WARRANTY; without even the implied warranty of              *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               *
* GNU General Public License for more details.                                *
*                                                                             *
* As a special exception, if other files instantiate templates or             *
* use macros or inline functions from this file, or you compile this          *
* file and link it with other works to produce a work based on this file,     *
* this file does not by itself cause the resulting work to be covered         *
* by the GNU General Public License. However the source code for this         *
* file must still be made available in accordance with section (3) of         *
* the GNU General Public License.                                             *
*                                                                             *
* This exception does not invalidate any other reasons why a work based       *
* on this file might be covered by the GNU General Public License.            *
*                                                                             *
*                                                    (c)2006 Lennart Yseboodt *
*                                                    (c)2006 Michael De Nil   *
\*****************************************************************************/

/*****************************************************************************/
#include "plibc.h"
/*****************************************************************************/

/* ****************************************************************************  
 * unsigned short strMatch(char* bufa, char*bufb, unsigned long n)
 * Description: Compares bufa and bufb for a length of n bytes.
 * Return value: Returns the number of character NOT matching.
*/
euint16 strMatch(eint8* bufa, eint8*bufb,euint32 n)
{
	euint32 c;
	euint16 res=0;
	for(c=0;c<n;c++)if(bufa[c]!=bufb[c])res++;
	return(res);
}
/*****************************************************************************/ 


/* ****************************************************************************  
 * void memCpy(void* psrc, void* pdest, unsigned long size)
 * Description: Copies the contents of psrc into pdest on a byte per byte basis.
 * The total number of bytes copies is size.
*/
void memCpy(void* psrc, void* pdest, euint32 size)
{
	while(size>0){
		*((eint8*)pdest+size-1)=*((eint8*)psrc+size-1);
		size--;
	}
}
/*****************************************************************************/ 

void memClr(void *pdest,euint32 size)
{
	while(size>0){
		*(((eint8*)pdest)+size-1)=0x00;
		size--;
	}
}

void memSet(void *pdest,euint32 size,euint8 data)
{
	while(size>0){
		*(((eint8*)pdest)+size-1)=data;
		size--;
	}
}