libunic/tochar16_unicode.c

/* This software is licensed by the MIT License, see LICENSE file */
/*                                Copyright © 2022 Gregory Lirent */

#include "build.h"

char16_t* tochar16_unicode(char16_t d[2], unsigned int uc) {
    if (uc <= 0xffff) {
        *(d++) = uc;
    } else if (uc <= 0x10ffff && (uc < 0xd800 || uc > 0xdfff)) {
        uc    -= 0x010000;
        *(d++) = 0xd800 | (uc&0x0ffc00)>>10;
        *(d++) = 0xdc00 | (uc&0x03ff);
    } else d = 0;

    return d;
}