min max

johnlong

Senior Member
Hi All
was having a look at phil hornsbeys code for setting up the htu21d
and noticed that he uses the min limiting command (min, 1-1)
do I take from this that the min ,0 can not be used but to obtain zero , 1-1
will deliver zero
regards
john
 

hippy

Technical Support
Staff member
I think the answer is yes; as all PICAXE numbers are positive integers "MIN 0" is in effect a non-operation.

Eg "1 - 2" would notionally be -1, but in PICAXE terms that underflows to become $FFFF (65535) which is positive, so is already above the lower 0 limit.

To limit the subtraction of 'x' from underflowing zero ...

Let result = var Min x - x
 
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