5.3.76 _Q31atan Function

This function finds the arc tangent of a Q31 value.

Include

<libq.h>

Prototype

_Q31 _Q31atan(_Q31 x);

Argument


`x`	a fixed-point number in Q31 format, which ranges from -2³¹ to 2³¹-1. The value of this argument ranges from -2147483648 to 2147483647.

Return Value

This function returns the arc tangent of x in Q31 format. The value ranges from -1686629714 to 1686629713.