- passing double to IMPORT: functions

Finally, it seems its impossible to pass double-floats to imported functions !

To pass floats, my final solution is:

        create sfarr 32 sfloats allot
        0 value nsf

        : >parm ( nparm -- n*i )
            to nsf
            nsf 1+ 1 ?DO nsf i - sfloats sfarr + sf! LOOP
            nsf 0 ?DO i cells sfarr + @ LOOP ;

Then...

        \ import: float VectorMagnitude(float x, float y, float z);

        3 IMPORT: VectorMagnitude ( x y z -- len )

        \ use it as this

        : VectorMagnitude \ N: ( x y z -- len ) \ S: --
                3 >nparm VectorMagnitude nsf ! nsf sf@ ;

To pass double-floats, I have created a small .DLL with redefinitions to always use floats! - regretable solution!

Charles Melice

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Received on Thu Feb 25 1999 - 08:47:56 PST