# LOOP COUNT

General Compiler Directive: Specifies the iterations (typical trip count) for a DO loop.

!DIR$ LOOP COUNT (n1[, n2]...)

!DIR$ LOOP COUNT= n1[, n2]...

!DIR$ LOOP COUNT qualifier(n)[, qualifier(n)]...

!DIR$ LOOP COUNT qualifier=n[, qualifier=n]...

n1, n2 | Is a non-negative integer constant. It indicates that the next DO loop will iterate n1, n2, or some other number of times.
qualifier | Is one or more of the following: MAX - specifies the maximum loop trip count. MIN - specifies the minimum loop trip count. AVG - specifies the average loop trip count.

The value of the loop count affects heuristics used in software pipelining, vectorization, and loop-transformations.

There is no check at runtime to determine if the MAX or MIN values are exceeded.

## Example

Consider the following:

    !DIR$ LOOP COUNT (10000)
    do i =1,m
    b(i) = a(i) +1 ! This is likely to enable the loop to get software-pipelined
    enddo

Note that you can specify more than one LOOP COUNT directive for a DO loop. For example, the following directives are valid:

    !DIR$ LOOP COUNT (10, 20, 30)
    !DIR$ LOOP COUNT MAX=100, MIN=3, AVG=17
    DO
    ...

Parent topic: J to L

## See Also

General Compiler Directives
Syntax Rules for Compiler Directives
Rules for General Directives that Affect DO Loops
Rules for Loop Directives that Affect Array Assignment Statements