Positron Compiler Documentation

ISqr

Positron8 · Revision 4.0.6.5 · PDF page 106

Assignment Variable = ISqr(pVariable)

Deduce the integer Square Root of an integer value

pVariable can be a constant, variable or expression that requires the Square Root extracted. Assignment Variable can be any valid variable type.

Device = 18F26K40             ' Select the device to compile for
Declare Xtal = 16  ' Tell the compiler the device will be operating at 16MHz
Declare Hserial_Baud = 9600   ' Set the Baud rate for HRsoutLn

Dim ByteIn as Byte          ' Holds the value to ISqr
Dim ByteOut as Byte        ' Holds the result of the Isqr

ByteIn = 123               ' Load the variable
ByteOut = ISqr(ByteIn)      ' Extract the integer square root of the value
HRsoutLn Dec ByteOut        ' Display the result
Stop

When implementing trigonometry, or other built in, functions within an expression, always wrap them in parenthesis, otherwise the parser may consider the extra operands as part of the trigonometry parameter and produce an incorrect result. For example:

MyAssignment = (Isqr(MyVar1)) + MyVar2
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