NXC  Version 1.2.1 r5
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#define Atan (   _X)    asm { atan __FLTRETVAL__, _X }

Compute arc tangent.

Computes the arc tangent of _X. Only constants or variables allowed (no expressions).

Deprecated:
Use atan() instead.
Parameters
_XFloating point value.
Returns
Arc tangent of _X.