5.3.59 _Q16reciprocalQ15 Function

This function returns the reciprocal of a Q15 value. Since the input range lies in the -1 to +1 region, the output is always greater than the -1 or +1 region. So, Q16 format is used to represent the output.

Include

<libq.h>

Prototype

_Q16 _Q16reciprocalQ15(_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 reciprocal of x in Q16 format. The value ranges from -2147483648 to 2147418112.