LPM_ABS

Ports

Port Name	Type	Usage	Description	Comments
Data	I	Required	Vector represents SIGNED number	Vector, LPM_Width wide
Result	O	Required	Absolute Value of Data	Vector, LPM_Width wide.
Overflow	O	Optional	High (1) if Data = -2^LPM_Width-1	Note 1

Note 1: Two's complement allows one more negative number than positive. The overflow port detects that singular instance and goes high to indicate that no positive equivalent exists.

Properties

Property	Usage	Value	Comments
LPM_Width	Required	LPM Value > 1	Width of input and output vectors

Function

           if Data = 2^LPM_Width-1, then Overflow = 1, Result = UNDEFINED
                    else if Data < 0, then Result = (0 - Data)
                            else Result = Data

Data must always represent a SIGNED number and may be positive or negative. Result will always be positive.