128 int32_t utf32_from_utf8_at(const char *src, size_t src_len, size_t index, size_t *next_index)  in utf32_from_utf8_at()  argument
130     if (index >= src_len) {  in utf32_from_utf8_at()
146 ssize_t utf32_to_utf8_length(const char32_t *src, size_t src_len)  in utf32_to_utf8_length()  argument
148     if (src == nullptr || src_len == 0) {  in utf32_to_utf8_length()
153     const char32_t *end = src + src_len;  in utf32_to_utf8_length()
168 void utf32_to_utf8(const char32_t* src, size_t src_len, char* dst, size_t dst_len)  in utf32_to_utf8()  argument
170     if (src == nullptr || src_len == 0 || dst == nullptr) {  in utf32_to_utf8()
175     const char32_t *end_utf32 = src + src_len;  in utf32_to_utf8()
283 void utf16_to_utf8(const char16_t* src, size_t src_len, char* dst, size_t dst_len)  in utf16_to_utf8()  argument
285     if (src == nullptr || src_len == 0 || dst == nullptr) {  in utf16_to_utf8()
290     const char16_t* const end_utf16 = src + src_len;  in utf16_to_utf8()
317 ssize_t utf16_to_utf8_length(const char16_t *src, size_t src_len)  in utf16_to_utf8_length()  argument
319     if (src == nullptr || src_len == 0) {  in utf16_to_utf8_length()
324     const char16_t* const end = src + src_len;  in utf16_to_utf8_length()