Easy way to keeping angles between -179 and 180 degrees

Question

Is there an easy way to convert an angle (in degrees) to be between -179 and 180? I\'m sure I could use mod (%) and some if statements, but it gets ugly:

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Answer 1

Not that smart, too, but no if.

angle = (angle + 179) % 360 - 179;

But I am not sure how Java handles modulo for negative numbers. This works only if -1 modulo 360 equals 359.

UPDATE

Just checked the docs and a % b yields a value between -(|b| - 1) and +(|b| - 1) hence the code is broken. To account for negative values returned by the modulo operator one has to use the following.

angle = ((angle + 179) % 360 + 360) % 360 - 179;

But ... no ... never ... Use something similar to your initial solution, but fixed for values smaller then -179.