pTAL Reference Manual (H06.03+)

Expressions

HP pTAL Reference Manual—523746-005

5-5

Arithmetic Expressions

An arithmetic expression is a sequence of operands and arithmetic operators that

computes a single numeric value of a specific data type.

are unary plus and minus operators. The default is unary plus.

operand

is one of the elements in Table 5-2 on page 5-5.

arithmetic-operator

is one of the following:

Signed arithmetic operator +, -, *, /

Unsigned arithmetic operator '+', '-', '*', '/', '\'

Logical operator LOR, LAND, XOR

Table 5-2. Operands in Arithmetic Expressions

Element Description Example

Variable The identifier of a simple variable

, array element,

pointer, structure data item

, or equivalenced variable,

with or without @ or an index

var[10]

Constant A character string or numeric constant 103375

LITERAL The identifier of a named constant file_size

Function

invocation

The invocation of a procedure that returns a value $LEN (x)

expression Any expression x := y

(expression) Any expression, enclosed in parentheses (x := y)

Code space item The identifier of a procedure, subprocedure, or label

prefixed with @ or a read-only array optionally prefixed

with @, with or without an index

@label_a

operand

arithmetic-operator

operand

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