functor, args, funargs

functor(func)

:: Functor of function form func.

args(func)

:: List of arguments of function form func.

funargs(func)

:: cons(functor(func),args(func)).

return

functor() : indeterminate, args(), funargs() : list

func

function form

• See section vtype for function form.
• Extract the functor and the arguments of function form func.
• Assign a program variable, say F, to the functor obtained by functor(). Then, you can type (*F)(x) (, or (*F)(x,y,...) depending on the arity,) to input a function form with argument x.

[0] functor(sin(x));
sin
[0] args(sin(x));
[x]
[0] funargs(sin(3*cos(y)));
[sin,3*cos(y)]
[1] for (L=[sin,cos,tan];L!=[];L=cdr(L)) {A=car(L); print(eval((*A)(@pi/3)));}
0.86602540349122136831
0.5000000002
1.7320508058

References

section vtype.

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