New arithmetic operator - Integer(), 'i='

[larryllix]

Since v5.xx now has decimal value representation, a nice operator to have add to ISY would be

 

• Integer() that returns the whole number of a compound number

 

The syntax could be something done like this (in the same flavour as existing operators)

• $whole.number  i-  $compound.number

 

 

eg.

•  $compound.number   =   123.456
•  $whole.number   i=   $compound.number
•  
• $whole.number == 123     is True

 

This could save a few lines of x / 10^n  * 10^n to extract Integers from compound numbers.

 

Thanks!

[Chris Jahn]

That's a good suggestion.  We should probably add fraction() to get the number after the decimal as an integer as well.  I'll see what we can do.

[larryllix]

That's a good suggestion.  We should probably add fraction() to get the number after the decimal as an integer as well.  I'll see what we can do.

'%=' already generates a modulus function extracting the fractional part, as a fraction. 

 

A fractional function resulting in a whole number would return strange results.

modulus(123.456) would result in 0.456

frac(123.456)  would result in 456.000

frac(123.4560001) would result in 4560001.000

 

Maybe I missed the concept usefulness. Or, perhaps there is no way around the user needing to control how many decimals they want. The decimal variables are not floating point and that is probably a very good thing in HA/control systems.