Function detzcode

src/date.cpp:481–486

    }

    static int_fast32_t detzcode(const char *const codep) {
        int_fast32_t result = (codep[0] & 0x80) ? -1 : 0;
        for (int i = 0; i < 4; ++i)
            result = (result << 8) | (codep[i] & 0xff);
        return result;
    }

    static int_fast64_t detzcode64(const char *const codep) {
        int_fast64_t result = (codep[0] & 0x80) ? -1 : 0;