kv

-

kernel handle of type MKernelVector

f

-

C function pointer

data

-

pointer to any data

err

-

boolean flag set to true if an error occurs executing f

    #include "maplec.h"

    typedef struct {

       MKernelVector kv;

       ALGEB *args;

    } tryGuessArgs;

    void *tryGuess( void *data )

    {

    return (void*)MyGuessInput(((tryGuessArgs*)data)->kv,

                   ((tryGuessArgs*)data)->args);

    }

    ALGEB M_DECL MyGuessInput2( MKernelVector kv, ALGEB *args )

    {

    M_BOOL errorflag;

    ALGEB result;

    tryGuessArgs a;

    a.kv = kv;

    a.args = args;

    result = (ALGEB)MapleTrapError(kv,tryGuess,&a,&errorflag);

    if( errorflag ) {

        result = EvalMapleStatement(kv,"lasterror:");

        MapleALGEB_Printf(kv,"Caught error: %an",result);

        return( ToMapleBoolean(kv,FALSE) );

    }

    else {

        return( result );

    }

    }