_Q15cosPI Function

This function finds the cosine of PI (π) times a Q15 value.

Include

<libq.h>

Prototype

_Q15 _Q15cosPI(_Q15 x);

Argument

`x`	a fixed-point number in Q15 format, which ranges from -2¹⁵ to 2¹⁵-1. The value of this argument ranges from -32768 to 32767.

Return Value

This function returns the cosine of PI times x in Q15 format. The value ranges from -32768 to 32767.