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log_exp - Short Reference

Reference

Other versions: 7.31 | 7.40 | 7.54

Syntax

... { {operand1 {=|EQ|<>|NE|>|GT|<|LT|>=|GE|<=|LE 
   
            |CO|CN|CA|NA|CS|NS|CP|NP 

                |BYTE-CO|BYTE-CN|BYTE-CA|BYTE-NA|BYTE-CS|BYTE-NS 

                |O|Z|M} operand2 } 

    | {operand  [NOT] BETWEEN operand1 AND operand2} 
    | {<fs>     IS [NOT] ASSIGNED} 

    | {ref      IS [NOT] BOUND} 
    | {operand  IS [NOT] INITIAL} 

    | {para     IS [NOT] REQUESTED} 
    | {para     IS [NOT] SUPPLIED} 

    | {[operand [NOT] IN] seltab} } ... . 

Effect

Logical expression for formulating a condition for operands. As operands you can use data objects, predefined functions, functional methods and calculation expressions. Logical expressions can be bracketed explicitly with ( ), linked with AND, OR and EQUIV, and negated with NOT. A logical expression can appear in certain statements such as control statements.

Additions

• =|EQ|<>|NE|>|GT|<|LT|>=|GE|<=|LE
  Relational pperators for All Data Types
• CO|CN|CA|NA|CS|NS|CP|NP
  Relational Operators for Character-Type Data Types
• BYTE-CO|BYTE-CN|BYTE-CA|BYTE-NA|BYTE-CS|BYTE-NS
  Relational Operators for Byte-Type Data Types.
• O|Z|M
  Relational Operators for Bit Patterns
• [NOT] BETWEEN
  Determines interval assignment.
• IS [NOT] ASSIGNED
  Determines whether a memory area is assigned to a field symbol <fs>.
• IS [NOT] BOUND
  Determines whether a reference variable ref is valid.
• IS [NOT] INITIAL
  Determines whether an operand operand is initial.
• IS [NOT] REQUESTED
  Obsolete: Determines whether an output paramater para of a procedure is requested.
• IS [NOT] SUPPLIED
  Determines whether a formal parameter para of a procedure is supplied with data or requested.
• [operand [NOT] IN] seltab
  Determines whether an operand fulfills the conditions of a selection table seltab.