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I have this discrepancy between two values that have to be the same…
#define degreesToRadian(x) (M_PI * x / 180.0f)
...
CGFloat angle = -3.0f;
CGFloat beta = degreesToRadian(90.0f - fabsf(angle));
CGFloat delta = (90.0f - fabsf(angle)) * M_PI /180.0f;
at this point I get beta = 282.72 and delta = 1.51 ?
Both values have to be the same!
why is that?
Your macro is broken – change:
to:
NB: this is yet another example of why you should not use the preprocessor for this kind of thing. C and Objective C have had inline functions for 20 years now – you should make use of them.