Hi,

see the C-interface documentation for type equivalence: http://www.iro.umontreal.ca/~gambit/doc/gambit-c_19.html#SEC126

If you want to send a float as an int to a c-lambda, you can convert it with (inexact->exact (round x)). To send an integer as a float, use (exact->inexact x).

Cheers,

Pierre-Alexandre

2006/12/23, TJ tjay.dreaming@gmail.com:

Is there a way to make Gambit behave like C when passing floats/ints to and from foreign functions? I mean to have them automatically converted as they would be if I were programming in C.

I've run into a problem where I have 2 variables (in Scheme) to keep track of my OpenGL window's width and height, but the calls to OpenGL expect floats (gluOrtho2D) while the calls to SDL expects ints (SDL_SetVideoMode).

If there isn't a way to convert automatically, is there a Scheme function to convert between these two types? I suppose I could write them myself, but since I'm already asking...

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