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