Operators

Propeller Assembly code can contain expressions using any operators that are allowed in constant expressions. The table below summarizes all the operators allowed in Propeller Assembly code. Please refer to the Spin Language Reference Operators section on page for detailed descriptions of their functions; page numbers are given in the table.

Constant Expression Math/Logic Operators
Normal Operator	Is Unary	Description, Page Number
+		Add '+', '+='
+	✓	Positive (unary form of Add) '+' (+X)
-		Subtract '-', '-='
-	✓	Negate (unary form of Subtract) '-' (-X)
*		Multiply, Return Low '', '=, multiply and return lower 32 bits (signed)
**		Multiply, Return High '', '=', multiply and return upper 32 bits (signed)
/		Divide '/', '/=' (signed)
//		Modulus '//', '//=' (signed)
# >		Limit Minimum '#>', '#>=' (signed)
< #		Limit Maximum '<#', '<#=' (signed)
^ ^	✓	Square Root '^^'
\| \|	✓	Absolute Value '\| \|'
~>		Bitwise Shift Arithmetic Right '~>', '~>='
<	✓	Bitwise Decode '\|<', decode value (0 - 31) into single-high-bit long
>	✓	Bitwise Encode '>\|', encode long into value (0 - 32) as high-bit priority
<<		Bitwise Shift Left '<<', '<<='
>>		Bitwise Shift Right '>>', '>>='
<-		Bitwise Rotate Left '<-', '<-='
->		Bitwise Rotate Right '->', '->='
><		Bitwise Reverse '><', '><='
&		Bitwise AND '&', '&='
\|		Bitwise OR '\|', '\|='
^		Bitwise XOR '^', '^='
!	✓	Bitwise NOT '!'
AND		Boolean AND 'AND', 'AND=' (promotes non-0 to -1)
OR		Boolean OR 'OR', 'OR=' (promotes non-0 to -1)
NOT	✓	Boolean NOT 'NOT' (promotes non-0 to -1)
==		Boolean Is Equal '==', '==='
<>		Boolean Is Not Equal '<>', '<>='
<		Boolean Is Less Than '<', '<=' (signed)
>		Boolean Is Greater Than '>', '>=' (signed)
=<		Boolean Is Equal or Less '=<', '=<=' (signed)
=>		Boolean Is Equal or Greater '=>', '=>=' (signed)
@	✓	Address Symbol '@'