iif <expression> <statement>Conditionally assemble the <statement> following <expression>.
IIF stands for Immediate IF. If the value of <expression> is non-zero then <statement> is assembled. No ENDC should be used in conjunction with this directive. The <statement> can not include a label, but a label may precede the IIF directive. For example: foo IIF bar equ 42 The foo label will be assigned with 42 if bar evaluates to true, otherwise foo will be assigned with the current program counter. The case when assigning a value in the IIF <statement> using the equal (=) operator and the option -spaces is used can’t work as the equal operator will be evaluated as part of the expression. I.e. foo IIF 1+1 = 42 will work, but foo IIF 1 + 1 = 42 when the option -spaces is specified won’t work as = 42 will be evaluated as part of the expression.