
Hi all, and thx a lot for your answers,

in fact i know that R deals with logical numbers 0 and 1 the same way like TRUE and FALSE but my problem is in fact with C language.

I have done an interface with C and my first problem was with float variables, but this warning doesn't appear everytime and really i don't know the problem with R: 

"Warning message: 
DLL attempted to change FPU control word from 8001f to 9001f"

The second problem is how to define my matrix in the function call of R so that C take it as an input, knowing that for C this matrix is dfine as: "int M[dimrow][dimcol]" and for R is define as.matrix(m),

it really hurts interfacing with R

Thx a lot

Ramzi



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