32     static uint32_t lv_txt_unicode_to_utf8(uint32_t letter_uni);
41     static uint32_t lv_txt_unicode_to_iso8859_1(uint32_t letter_uni);
527 static uint32_t lv_txt_unicode_to_utf8(uint32_t letter_uni)  in lv_txt_unicode_to_utf8()  argument
529     if(letter_uni < 128) return letter_uni;  in lv_txt_unicode_to_utf8()
532     if(letter_uni < 0x0800) {  in lv_txt_unicode_to_utf8()
533         bytes[0] = ((letter_uni >> 6) & 0x1F) | 0xC0;  in lv_txt_unicode_to_utf8()
534         bytes[1] = ((letter_uni >> 0) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
538     else if(letter_uni < 0x010000) {  in lv_txt_unicode_to_utf8()
539         bytes[0] = ((letter_uni >> 12) & 0x0F) | 0xE0;  in lv_txt_unicode_to_utf8()
540         bytes[1] = ((letter_uni >> 6) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
541         bytes[2] = ((letter_uni >> 0) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
544     else if(letter_uni < 0x110000) {  in lv_txt_unicode_to_utf8()
545         bytes[0] = ((letter_uni >> 18) & 0x07) | 0xF0;  in lv_txt_unicode_to_utf8()
546         bytes[1] = ((letter_uni >> 12) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
547         bytes[2] = ((letter_uni >> 6) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
548         bytes[3] = ((letter_uni >> 0) & 0x3F) | 0x80;  in lv_txt_unicode_to_utf8()
772 static uint32_t lv_txt_unicode_to_iso8859_1(uint32_t letter_uni)  in lv_txt_unicode_to_iso8859_1()  argument
774     if(letter_uni < 256)  in lv_txt_unicode_to_iso8859_1()
775         return letter_uni;  in lv_txt_unicode_to_iso8859_1()