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[proxmark3-svn] / armsrc / util.c

//-----------------------------------------------------------------------------\r
// Utility functions used in many places, not specific to any piece of code.\r
// Jonathan Westhues, Sept 2005\r
//-----------------------------------------------------------------------------\r
#include <proxmark3.h>\r
#include "apps.h"\r
\r
void *memcpy(void *dest, const void *src, int len)\r
{\r
	BYTE *d = dest;\r
	const BYTE *s = src;\r
	while((len--) > 0) {\r
		*d = *s;\r
		d++;\r
		s++;\r
	}\r
	return dest;\r
}\r
\r
void *memset(void *dest, int c, int len)\r
{\r
	BYTE *d = dest;\r
	while((len--) > 0) {\r
		*d = c;\r
		d++;\r
	}\r
	return dest;\r
}\r
\r
int memcmp(const void *av, const void *bv, int len)\r
{\r
	const BYTE *a = av;\r
	const BYTE *b = bv;\r
\r
	while((len--) > 0) {\r
		if(*a != *b) {\r
			return *a - *b;\r
		}\r
		a++;\r
		b++;\r
	}\r
	return 0;\r
}\r
\r
int strlen(char *str)\r
{\r
	int l = 0;\r
	while(*str) {\r
		l++;\r
		str++;\r
	}\r
	return l;\r
}\r