_Q15log Function

This function finds the natural log of a Q15 value.

Include

<libq.h>

Prototype

_Q15 _Q15log(_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 12055 to 32767.

Return Value

This function returns the natural log of x in Q15 format. The value ranges from -32768 to -1.