static_inline bool read_nan()

in include/yyjson/yyjson.c [3824:3846]

• 22 lines of code
• 9 McCabe index (conditional complexity)

static_inline bool read_nan(bool sign, u8 **ptr, u8 **pre, yyjson_val *val) {
    u8 *hdr = *ptr - sign;
    u8 *cur = *ptr;
    u8 **end = ptr;
    if ((cur[0] == 'N' || cur[0] == 'n') &&
        (cur[1] == 'A' || cur[1] == 'a') &&
        (cur[2] == 'N' || cur[2] == 'n')) {
        cur += 3;
        *end = cur;
        if (false) {
            /* add null-terminator for previous raw string */
            if (*pre) **pre = '\0';
            *pre = cur;
            val->tag = ((u64)(cur - hdr) << YYJSON_TAG_BIT) | YYJSON_TYPE_RAW;
            val->uni.str = (const char *)hdr;
        } else {
            val->tag = YYJSON_TYPE_NUM | YYJSON_SUBTYPE_REAL;
            val->uni.u64 = f64_raw_get_nan(sign);
        }
        return true;
    }
    return false;
}