string.h

来自「ADS下的bios工程」· C头文件 代码 · 共 71 行

#ifndef _BIOS_STRING_H
#define _BIOS_STRING_H

#include <bios/types.h>


#if defined(__STDC__) && __GNUC__ < 2
	extern void *memcpy(void *to, const void *from, size_t size);
#endif

#ifndef NULL
#define NULL ((void *)0)
#endif

#define MAX_LINE_SIZE  1024


extern void *memzero(void *ptr, int size);
extern int memeq(const void *m1, const void *m2, size_t size);

/*
 * int strnlen(const char *s, size_t size);
 * int strlen(char *s);
 */
extern int strnlen(const char *p, size_t size);


/*
 * char *strchr(const char *s, int c);
 *
 * The strchr() function returns a pointer to the first
 * occurence of the character c in the string s.
 */
extern char *strchr(char *p, int ch);


/* 
 * str_ncmp(char *s1, char *s2, size_t n);
 * 
 * The str_ncmp() function compares the two strings s1 and s2.
 * It returns an TRUE(1) or FALSE(0). if s1 to match s2, return 0
 * other case return 1.
 */
extern u32 str_ncmp(char* ,char* ,size_t);

/*
 * strtoint(char *s, size_t count);
 */
extern u32 strtoint(char *s, size_t t);

/*
 * hexstrtohex(char *s, size_t count);
 */
extern u32 hexstrtohex(char *, size_t);

/*
 * power(u32 value, u32 n);
 *
 * return value ^ n
 */
int power(u32 value, u32 n);

/*
 * strcat(dest, src)
 *
 * dest string will be appended to src string
 */
extern char * strcat(char *, char*);

#endif /* _BIOS_STRING_H */