5.3.70 _Q31abs Function
The function finds the absolute value of a Q31 value.
Include
<libq.h>
Prototype
_Q31 _Q31abs(_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 absolute value of x in Q31 format. The value
ranges from 0 to 2147483647.
Note:
_Q31abs(-2147483648) = 2147483647.
Also abs (smallest negative number) = largest positive number.