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Translating R to C

Within this document the scope of the translation from R to C is described. It is crucial, that very few functions are supported. Even though the relevant functions to define ode systems or loss functions should be available.

Supported functions

  • arithmetic functions:
    • +, -, * and /
  • trigonometric functions:
    • sin, cos, tan, etc.
  • subsetting:
    • one element subsetting
  • interpolation via catmull rom spline interpolation

Objects

  • numeric vectors (can be matrices -> handled at runtime)
  • scalar doubles
  • scalar ints

Plan

  • first traversion over R code

    • find all variables
    • stop at prohibited functions: e.g. EXPR_d, Vector, VectorManager, etc.
    • create symbol table [index, variable name, type]

  • second traversion over R code

    • remove type annotation of each EXPR
    • gather constant ints, doubles and bools
    • gather all variables found in the expression

  • define function signature

  • define function declaration

  • define memory freeing

  • assemble function