Reference Manual

PMAC 2 Software Reference
PMAC Mathematical Features 363
^
Function
"Bit-by-bit “exclusive or”
Remarks
The ^ sign implements the bit-by-bit logical “exclusive or” (xor) of the numerical value
preceding it and the numerical value following it. A given bit of the result is equal to 1
if the matching bits of the two operands are different from each other. The operation is
done both on integer bits and fractional bits (if any).
Multiplication, division, modulo (remainder), and bit-by-bit “and” operations have
higher priority than addition, subtraction, bit-by-bit “or”, and bit-by-bit “exclusive-or”
operations. Operations of the same priority are implemented from left to right.
Example
Operation Result
2^1
3
2^2
0
5^7
2
$AA^$55
$FF
3^-3
-2
0.5^0.875
0.375
Mathematical Functions
ABS
Function
Absolute value
Syntax
ABS({expression})
Domain
All real numbers
Domain units
User-determined
Range
Non-negative real numbers
Range units
User-determined
Remarks
ABS implements the absolute-value, or magnitude function of the mathematical
expression contained inside the following parentheses.
Example
P8=ABS(P7) ; Computes magnitude of P7
IF(Q200!=0) ; Divide by 0 check
Q240=ABS(Q200)/Q200 ; Computes sign (-1 or 1) of Q200
ELSE
Q240=0 ; Sign value is 0
ENDIF