Function encode_utf8_3

test/main.c:366–371

}

void encode_utf8_3(uint8_t *data, uint32_t i) {
    i = i & 0xffff;
    data[0] = 0xe0 + (i >> 12);
    data[1] = 0x80 + ((i >> 6) & 0x3f);
    data[2] = 0x80 + (i & 0x3f);
}

void encode_utf8_4(uint8_t *data, uint32_t i) {
    i = i & 0x10ffff;