foreign-symbol-defined-p

Determines whether a foreign symbol is defined.

fli

foreign-symbol-defined-p symbol-name &key functionp module encoding => boolean

`symbol-name`⇩	A string or a symbol.
`functionp`⇩	A boolean.
`module`⇩	A symbol or string naming a module, or `nil`.
`encoding`⇩	One of `:source`, `:object`, `:lisp` or `:dbcs`.

boolean

nil or t.

The function foreign-symbol-defined-p returns t if symbol-name is a known foreign symbol and nil otherwise.

functionp, module and encoding are used as for make-pointer.

(foreign-symbol-defined-p "printf") => t