5.3.89 _Q31neg Function

This function negates a Q31 value with saturation. The value is saturated in the case where the input is -32768.

Include

<libq.h>

Prototype

_Q31 _Q31neg(_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 -x in Q31 format. The value ranges from -2147483648 to 2147483647.