Basic math errors issue

[Timbo]

Hi,

Doing some maths I started to get odd results

I'm compiling for the firewing18 board

Code: Select all

 COnst ValueA = 3000000
 Dim ValueUshort as Ushort  = 3075
// Dim ValueUlong as ULong
 Dim ResultUshort as Ushort
 Dim ResultUlong as Ulong

' Declarations...

Sub Main()

ResultUshort = ValueA / ValueUshort
ResultUlong = ValueA / ValueUshort


End Sub

At the end for the same sum I get
ResultUshort = 16
ResultUlong = 975

For info I'm looking at the results in a VSM (ISIS)

Any ideas where its all going wrong?

[Timbo]

ok i found my issue

By using a Ushort for the ValueUshort and a Ushort for ResultUshort I forced the compiler to use Word maths. Using ResultULong or changing ValueUshort to be a Long it forces it to DoubleWord maths

Using word maths causes the compiler to mess the very log constant.

I know now how to solve my issues.

Thanks Tim