176     const char * s1 = (const char *) p1;  in lv_memcmp()  local
178     while(--len > 0 && (*s1 == *s2)) {  in lv_memcmp()
179         s1++;  in lv_memcmp()
182     return *s1 - *s2;  in lv_memcmp()
226 int lv_strcmp(const char * s1, const char * s2)  in lv_strcmp()  argument
228     while(*s1 && (*s1 == *s2)) {  in lv_strcmp()
229         s1++;  in lv_strcmp()
232     return *(const unsigned char *)s1 - *(const unsigned char *)s2;  in lv_strcmp()
235 int lv_strncmp(const char * s1, const char * s2, size_t len)  in lv_strncmp()  argument
241     while(len > 0 && *s1 && (*s1 == *s2)) {  in lv_strncmp()
245         s1++;  in lv_strncmp()
248     return *(const unsigned char *)s1 - *(const unsigned char *)s2;  in lv_strncmp()