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If...else...command (single sortword environment)


IF <test> <statements1>

[ELSE <statements2>]

where <test> is one of the following:

<sortword> VALID

<sortword1>|(<expression1>) EQ|NE|GE|LE|GT|LT <sortword1>|<constant>|(<expression2>)

<sortword>|(<expression>) PASSES|FAILS <1D-gate>

<sortword>|(<expression>) MASKEDBY <16-bit mask>

<sortwordx>|(<expressionx>) [<sortwordy>|(<expressiony>)] GATEDBY <gate-expr>

and <gate-expr> is one of:

<gate-name>

<arraylist-of-gates>[<expression>]

where the gate dimension must match the number of arguments tested. The <expression> specified with the arraylist argument determines the offset into the arraylist, starting from zero, and hence the particular gate map referenced.


 

The IF command allows conditional execution of <statements1> or <statements2> depending on the result of a test. If the result is true, then <statements1> are executed, otherwise <statements2> are executed (if specified). The various forms of the IF command are described below in more detail.

  • Validation test operator (VALID)
  • Comparison operators (EQ,NE,GE,LE,GT,LT)
  • Filtering operators (PASSES,FAILS)
  • Masking operator (MASKEDBY)
  • Gate-testing operator (GATEDBY)

  • support@ns.ph.liv.ac.uk

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