The library contains some functions that can be used to evaluate the arguments of commands with the expression evaluator (cf. 7). For instance if the command Xcom needs a floating point parameter, it may be useful to be allowed to write
- interpcom -> Xcom a*(b+cos(x))
as well as
- interpcom -> Xcom 2.252
In this case the parameter must be parsed inside the C-function corresponding to the command Xcom, using the appropriate function of the library (cf. 7).