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Download CubeSuite+ V2.00.00 Integrated Development Environment User`s
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CubeSuite+ V2.00.00 CHAPTER 6 FUNCTIONAL SPECIFICATIONS atan Arc tangent [Classification] Mathematical library [Syntax] #include <math.h> double atan(double x); [Return value] Returns the arc tangent (arctangent) of x. The returned value is in radian and in a range of -π / 2 to π / 2. [Description] This function calculates the arc tangent (arctangent) of x. Specify x as, -1 <= x <= 1. Remark If the solution is a denormal number, atan sets macro ERANGE to global variable errno. The error processing of this function can be changed by using the matherrd function. R20UT2659EJ0100 Rev.1.00 Jul 01, 2013 Page 732 of 911
