Square Root - GE PACSystems RX7i Cpu Programmer's Reference Manual

Chapter 4. Ladder Diagram (LD) Programming
4.1.2

Square Root

Mnemonics:
SQRT_DINT
SQRT_INT
SQRT_REAL
SQRT_LREAL
When the Square Root function receives power flow, it finds the square root of IN and stores the
result in Q. The output Q must be the same data type as IN.
The power flow output is energized when the function is performed without Overflow, unless one of
these invalid REAL operations occurs:
If IN < 0, Q is set to 0 and ENO is set FALSE.
■
If IN is a NaN (Not a Number), Q will also be a NaN value and ENO will be set false.
■
Example
The square root of the integer number located at %AI0001 is placed into %R00003 when %I00001 is
ON.
Operands for the Square Root Function
Parameter Description
IN The value to calculate the
square root of. If IN < 0, the
function does not pass power
flow.
Q The calculated square root.
64 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual
Allowed Operands
All except variables located in %S - %SC
All except constants and variables located in %S -
%SC
Optional
No
No
GFK-2950C