add int16 and uint16 operators

[Yu-zh]

No description provided.

[peter-jerry-ye-code-review]

‼️ This code review is generated by a bot. Please verify the content before trusting it.

Here are three potential issues or observations from the provided git diff output:

1. Overflow Handling in Int16::op_add and Int16::op_sub:

   • In the Int16::op_add and Int16::op_sub functions, there are test cases that demonstrate overflow and underflow behavior. For example, adding 32767 and 1 results in -32768, which is correct for 16-bit signed integers. However, the comments in the test cases (e.g., // Overflow case) should be more explicit about the expected behavior, especially for developers who may not be familiar with integer overflow in signed 16-bit arithmetic. This could lead to confusion if the behavior is not well-documented.

2. Inconsistent Naming in Int16::from_int and Int16::to_int:

   • The test cases for Int16::from_int and Int16::to_int use Int::to_int16 and Int16::to_int, respectively. While this is functionally correct, the naming could be more consistent. For example, Int::to_int16 could be renamed to Int::as_int16 to better reflect that it is a conversion function rather than a simple getter. This would make the code more intuitive and easier to understand.

3. Potential Issue with UInt16::op_div:

   • In the UInt16::op_div function, there is a test case where 65535 / 1 is expected to return 65535. While this is correct, there is no test case for division by zero, which should be handled explicitly to avoid runtime errors. Adding a test case for division by zero and ensuring that the function either handles it gracefully or throws an appropriate error would improve the robustness of the code.

These observations are not necessarily bugs but rather areas where the code could be improved for clarity, consistency, and robustness.

[coveralls]

Pull Request Test Coverage Report for Build 4750

Details

• 14 of 20 (70.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.05%) to 83.048%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
int16/int16.mbt	7	8	87.5%
uint16/uint16.mbt	7	8	87.5%
builtin/console.mbt	0	2	0.0%
builtin/show.mbt	0	2	0.0%

Totals
Change from base Build 4748:	-0.05%
Covered Lines:	4845
Relevant Lines:	5834

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💛 - Coveralls