IntTryFromStr

        }
    
        if (!IntTryFromStr(&result.significand, digits.data)) {
            goto fail;
        }

    }
    
    bool IntTryFromStr(Int *out, const char *decimal) {
        u64 start = 0;

        Int out = IntInit();
    
        (void)IntTryFromStr(&out, decimal);
        return out;
    }

        Int parsed = IntFromStr("12x3");
        Int value  = IntInit();
        bool result = !IntTryFromStr(&value, "12x3");
    
        result = result && IntIsZero(&parsed);

        Int parsed = IntFromStr(NULL);
        Int value  = IntInit();
        bool result = !IntTryFromStr(&value, NULL);
    
        result = result && IntIsZero(&parsed);