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- #ifndef _LINUX_STRING_H_
- #define _LINUX_STRING_H_
- #include <linux/types.h> /* for size_t */
- #ifndef NULL
- #define NULL ((void *) 0)
- #endif
- extern inline char * _dl_strcpy(char * dst,const char *src)
- {
- register char *ptr = dst;
- while (*src)
- *dst++ = *src++;
- *dst = '\0';
- return ptr;
- }
-
- extern inline int _dl_strcmp(const char * s1,const char * s2)
- {
- unsigned register char c1, c2;
- do {
- c1 = (unsigned char) *s1++;
- c2 = (unsigned char) *s2++;
- if (c1 == '\0')
- return c1 - c2;
- }
- while (c1 == c2);
- return c1 - c2;
- }
- extern inline int _dl_strncmp(const char * s1,const char * s2,size_t len)
- {
- unsigned register char c1 = '\0';
- unsigned register char c2 = '\0';
- while (len > 0) {
- c1 = (unsigned char) *s1++;
- c2 = (unsigned char) *s2++;
- if (c1 == '\0' || c1 != c2)
- return c1 - c2;
- len--;
- }
- return c1 - c2;
- }
- extern inline char * _dl_strchr(const char * str,int c)
- {
- register char ch;
- do {
- if ((ch = *str) == c)
- return (char *) str;
- str++;
- }
- while (ch);
- return 0;
- }
- extern inline size_t _dl_strlen(const char * str)
- {
- register char *ptr = (char *) str;
- while (*ptr)
- ptr++;
- return (ptr - str);
- }
- extern inline void * _dl_memcpy(void * dst, const void * src, size_t len)
- {
- register char *a = dst;
- register const char *b = src;
- while (len--)
- *a++ = *b++;
- return dst;
- }
- extern inline int _dl_memcmp(const void * s1,const void * s2,size_t len)
- {
- unsigned char *c1 = (unsigned char *)s1;
- unsigned char *c2 = (unsigned char *)s2;
- while (len--) {
- if (*c1 != *c2)
- return *c1 - *c2;
- c1++;
- c2++;
- }
- return 0;
- }
- extern inline void * _dl_memset(void * str,int c,size_t len)
- {
- register char *a = str;
- while (len--)
- *a++ = c;
- return str;
- }
- #endif
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