$eval (mfunct, parse-spec1, parse-spec2) function

This function performs a math function on two parsed numeric values. The mfunct argument is one of the following: sum, diff, div, mult, or mod.

This parse expression is useful in match expressions with conditional operators. For example, the expression $eval(mult, $3, count=*) gt 85 matches if the third word, multiplied by the value following count= value is greater than 85.

The following examples show target strings, parse expressions, and return values:

Target string

Parse expression

Return value

Add 40 to 60

$eval (sum, $2, $4)

100

Counts Total=30 during secs=3 time

$eval (div, total=*, secs=*)

10

Counts Total=30 during 3 secs time

$eval (mult, total=*, $4)

90

Related topic

Parse-expressions

 

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