ushort arithmetic question

[Jonathan Crapuchettes]

On Fri, 25 Oct 2013 11:51:03 -0700, Ali Çehreli wrote:

> On 10/25/2013 11:45 AM, Jonathan Crapuchettes wrote:
>> Shouldn't this code work? Looking at the arithmetic conversions section
>> of http://dlang.org/type.html, point 4.1 makes me think that I
>> shouldn't be getting the error since they are the same type.
>>
>> void main()
>> {
>>      ushort v1 = 1; ushort v2 = 1; ushort v3 = v1 + v2;
>> }
>>
>> test.d(5): Error: cannot implicitly convert expression (cast(int)v1 +
>> cast (int)v2) of type int to ushort
>>
>>
> But there is 4.0 before 4.1: :)
> 
> 4. Else the integer promotions are done on each operand, followed by:
> 
>     1. If both are the same type, no more conversions are done.
> 
> Note "integer promotions are done on each operand". In other words, e.g.
> there is no arithmetic operation on a ushort. The expression v1 + v2 is
> performed as two ints.
> 
> Ali

Thank you for pointing that out for me. I missed that part.

Jonathan