ILBOXMU

ILBOXMU is the COBOL library routine called when the result field of a multiplication operation is defined larger than 15 digits.

This routine multiplies two 30-digit internal decimal numbers to produce a 60-digit decimal number.

Hints

Invoking ILBOXMU can cause excessive CPU use. Refer to the CPU attribution reports to determine which statement(s) called ILBOXMU. ILBOXMU is completely eliminated when the field defined for the result of the multiplication operation is less than 15 digits.

Reference Sources

IBM OS/VS COBOL Subroutine Library Program Logic, LY28-6425.