FACTORIAL - Factorial

The FACTORIAL function returns an integer that is the factorial of argument-1.
The type of this function is integer.

Format

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FUNCTION FACTORIAL (argument-1)

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Argument

1. argument-1 must be an integer greater than or equal to zero and less than or equal to 29.

Returned values

1. If the value of argument-1 is zero, the value 1 is returned.

2. If the value of argument-1 is positive, its factorial is returned.

3. The error default value is -2.

See also:        LOG, LOG10, SQRT

Example 9-15

...
DATA DIVISION.
WORKING-STORAGE SECTION.
01  RES PIC 9(8).
PROCEDURE DIVISION.
P1 SECTION.
MAIN.
    COMPUTE RES = FUNCTION FACTORIAL (07).
    DISPLAY RES UPON T.
    STOP RUN. 

Result:               00005040