Preprocessor/compiler calculations/arithmetic

[lilltroll]

Can I use the pre-prossor or a optimization level of the compiler to calculate things when compiling to avoid run-time overhead calculation.

For an example:

Code: Select all

#define Number (1+1)
#define PI 3.141592543
#define mPI (PI/1000)

I would like Number to be replaced by 2, and mPi to be 0.0031415...

Is it possible ?
And if, how do I check the result that was used in the compilation?