Do we need to validate strings representing real numbers in CellML initial_values?

[kerimoyle]

We currently don't validate that the occurrences of real numbers in the CellML2.0 model:

• 11.1.2.2 Variable -> Initial_values
• 9.1.2.2 Unit -> Multiplier
• 9.1.2.3 Unit -> Exponent

[kerimoyle]

Whoops, yes it does, just not in the validator struct. Real numbers are checked for the multipliers and exponents when they're read by the parser, but intial_value attributes are stored naively as strings: is that the intention?

[nickerso]

initial_value attributes can be either a number or a variable name, so I think we store it as a string so that we can always determine which it is...there should be validation that checks the string is either a variable in the same component or a valid real number.

[kerimoyle]

OK, ta, I'll add that to the list :)