gk_string.c

来自「工程模板 使用非常方便适用初学者 敬请下载」· C语言 代码 · 共 57 行

#include ".\include\gk_string.h"

/*------------------------------------------------------------------------------
gk_string.c
------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------
gk_memcpy 拷贝两块内存
入口参数：p1 value len
		  p1: source pointer
		  value: init data
		  len: memory length
------------------------------------------------------------------------------*/
void gk_memset(unsigned char *p1,unsigned char value,unsigned char len)
{
	unsigned char i;
	for(i=0;i<len;i++)
	{
		*p1++=value;
	}
}
/*------------------------------------------------------------------------------
gk_memcpy 拷贝两块内存
入口参数：p1 p1 len
		  p1: source pointer
		  p2: destination pointer
		  len: memory length
------------------------------------------------------------------------------*/
void gk_memcpy(unsigned char *p1,unsigned char *p2,unsigned char len)
{
	unsigned char i;
	for(i=0;i<len;i++)
	{
		*p1++=*p2++;
	}
}

/*------------------------------------------------------------------------------
gk_memcmp 比较两块内存值的大小
入口参数：p1 p1 len
出口参数：p1<p2:  return 0
		  p1=p2:  return 1
		  p1>p2:  return 2
------------------------------------------------------------------------------*/
unsigned char gk_memcmp(unsigned char *p1, unsigned char *p2, unsigned char len)
{
	unsigned char i;
	for(i=0;i<len;i++)
	{
		if((*p1++)<(*p2++))
			return 0;
		else if((*p1++)==(*p2++))
			return 1;
		else if((*p1++)>(*p2++))
			return 2;
	}
}