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Left Hand Pointer

Error Code M9

M[UMPS] by Example

Right Hand Pointer

M9, Divide by zero

Introduced in the 1995 ANSI M[UMPS] language standard.

This error means that during the evaluation of an expression containing a division (either common (/) or integer division (\)), a 'righthand' operand was encountered that has a zero value.

Set (TOTAL,NUMBER)=0
Set I="" For Set I=$Order(A(I)) Quit:I=""  Do
 . Set N=N+1,TOTAL=TOTAL+A(I)
 . Quit
Set AVERAGE=TOTAL/NUMBER

This error will occur in the case that array A has no members.

Set X="Apples"
Set Y=TOTAL\X+Y

This error will also occur for:

Set X=N#0
Set X=0**-1

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Copyright © Standard Documents; 1977-2017 MUMPS Development Committee;
Copyright © Examples: 1995-2017 Ed de Moel;
Copyright © Annotations: 2003-2017 Jacquard Systems Research.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 29-Nov-2011, 22:30:57 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)