Business Function compare Data Structure member Value vs Pointer


Well Known Member
I want to compare the values of a math numeric data structure member in a business function,(this is within BSFN B4201070 FYI).
What I want is:
if((lpDS->mnUnitsTransactionQty) != (lpDS->mnUnitsQuantityShipped));
//Do Someting
//Do Something else
When I attempt to build the above I get an "error C2088: '!=':illegal for struct" (thats true for any operator '<','>' etc...not just !=).
Again, I want to compare the values, not the pointer reference. I just don't have a good enough understanding to format this properly.
For example in my case UnitsTransactionQuantity = 10 UnitsQuantityShipped = 5.
Thanks for any suggestions.

Marshall Baird
E1 9.1 tools
Windows 7 64 bit
SQL 2008 R2


Legendary Poster
Since a MATH_NUMERIC is a JDE specific datatype, you use the API MathCompare.

MathCompare (LPMATH_NUMERIC lpmnValue0. LPMATH_NUMERIC 1pmnValue1);

0 : numbers are equal
1 : number 1 is greater
-1 : number 2 is greater

In your example:
<font class="small">Code:</font><hr /><pre>if(MathCompare(&lpDS->mnUnitsTransactionQty, &lpDS->mnUnitsQuantityShipped) != 0)
//Not Equal Do Someting
// Equal Do Something else
</pre><hr />


Well Known Member
While I'm at it, is there a place to find a list of these API's? I've done some googling related to this thread, but without much success.

Remo Williams

VIP Member
You can download the "EnterpriseOne 8.9x Tools API Reference" from Oracle. See attachment to get an idea of what it looks like.


  • 179391-JDEAPIs.jpg
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Legendary Poster
One quick note. I keep the API help file open just about all the time, however, it only documents a small fraction of the available APIs. However, you can usually find a call in an API "family", then find it in the system .h files and find other, non documented API.

For example, you can find MathAdd in the help file and then once you find MathAdd in jdekproto.h you can find all the other MATH_NUMERIC functions that are NOT documented like:


Why JDE decided to document IntToMathNumeric but not DoubleToMathNumeric is beyond me, but once you know one you can infer or find the others.