Reading integers vs reals, and writing integers vs reals

[stefanedwards]

I have noticed the following:

1: Using format statement (Iw) does not work if the variable is a real.

2: Fortran throws a fit if trying to read a real formatted number into an integer. No help there.

Int to int is easy, real to real even so. But what do we do about cross-overs, i.e. reading integers and output reals (easy), and reading reals and outputting integers?

[stefanedwards]

Give functions arguments int and format. Refer to parse.format function (in R/internals.R; might not be pushed yet).

Subroutines can choose to allocate an integer or real array for printing. Compiler optimisations should be able to handle a static 'if' within the writing parts. Reading data in is done with a real array.