Integer types

[Salih Dincer]

On Tuesday, 8 October 2024 at 15:57:24 UTC, Jared McKinnan wrote:
> Hello there,
>
> Just wanted to ask if there's a real difference between e.g. 
> the "long" type and "int_fast64_t" in terms of execution times.
>
> Thanks

```int_fast64_t``` is the fastest 64-bit or larger integer type. 
The type that is at least 64 bits long and works fastest on the 
platform is selected. This type can be selected if performance is 
more important than memory and the processor can run faster on 
certain types.

```long``` is an integer that is strictly 64 bits long. That is, 
this type is permanently 64 bits and provides cross-platform 
portability. If you want strictly 64 bits and care about 
cross-platform consistency, you should use this type.

So you have to choose between consistency and efficiency. When 
you tell the compiler this choice, it implements it if it can 
agree with the processor.

SDB at 79