__string.d/__string/char_traits.h

96     int compare(const char_type* __s1, const char_type* __s2, size_t __n) {
97         for (; __n; --__n, ++__s1, ++__s2)
99             if (lt(*__s1, *__s2))
101             if (lt(*__s2, *__s1))
124     char_type*       move(char_type* __s1, const char_type* __s2, size_t __n) {
125         if (__n == 0) return __s1;
126         char_type* __r = __s1;
127         if (__s1 < __s2)
129             for (; __n; --__n, ++__s1, ++__s2)
130                 assign(*__s1, *__s2);
132         else if (__s2 < __s1)
134             __s1 += __n;
137                 assign(*--__s1, *--__s2);
143     char_type*       copy(char_type* __s1, const char_type* __s2, size_t __n) {
145             _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
147         char_type* __r = __s1;
148         for (; __n; --__n, ++__s1, ++__s2)
149             assign(*__s1, *__s2);
213   static _LIBCPP_CONSTEXPR_SINCE_CXX17 int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
216     return std::__constexpr_memcmp(__s1, __s2, __n);
231     char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
232         return std::__char_traits_move(__s1, __s2, __n);
236     char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
238             _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
239         std::copy_n(__s2, __n, __s1);
240         return __s1;
283   static _LIBCPP_CONSTEXPR_SINCE_CXX17 int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
286     return std::__constexpr_wmemcmp(__s1, __s2, __n);
301     char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
302         return std::__char_traits_move(__s1, __s2, __n);
306     char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
308             _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
309         std::copy_n(__s2, __n, __s1);
310         return __s1;
354   compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
355       return std::__constexpr_memcmp(__s1, __s2, __n);
365     char_type*       move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
366         return std::__char_traits_move(__s1, __s2, __n);
370     char_type*       copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
372             _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
373         std::copy_n(__s2, __n, __s1);
374         return __s1;
442     int              compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT;
449     static char_type*       move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
450         return std::__char_traits_move(__s1, __s2, __n);
454     static char_type*       copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
456             _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
457         std::copy_n(__s2, __n, __s1);
458         return __s1;
481 char_traits<char16_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT
483     for (; __n; --__n, ++__s1, ++__s2)
485         if (lt(*__s1, *__s2))
487         if (lt(*__s2, *__s1))
536     int              compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT;
543     static char_type*       move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
544         return std::__char_traits_move(__s1, __s2, __n);
548     static char_type*       copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT {
549         std::copy_n(__s2, __n, __s1);
550         return __s1;
573 char_traits<char32_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT
575     for (; __n; --__n, ++__s1, ++__s2)
577         if (lt(*__s1, *__s2))
579         if (lt(*__s2, *__s1))