James Maxwell wrote:
Now, when I run the calculation "live" and try to compare to my
stored constants, I'm not getting matches. I'm assuming this is
because the result of the calculation *isn't* actually what I
stored in my constants, since the constants were rounded during the
NSLog. So, how do I make sure my "live" calculation returns a value
that will be rounded in the same way as an NSLog(@"%f", aFloat)?
Maybe you're trying to solve the wrong problem.
Just because you have a constant float doesn't mean it has to be:
extern const float Foo;
It could also be:
#define Foo (Foo_Value())
extern float Foo_Value();
Then you run some initializing code that calculates your "constant"
values and stores them in static variables to be returned by the
functions. E.g.:
static float const_Foo;
extern float Foo_Value() { return const_Foo; }
extern void initializeConstants()
{ const_Foo = calc_Foo(); ..calculate and store other results.. }
You could use inline functions, too, if that's your thing.
Whether an approach like this is sufficient to avoid problems with
rounding error and precision loss, only you can say, because you
haven't explained anything about the actual calculations.
-- GG
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