File: new_predicate.doc

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\DOC new_predicate

\TYPE {new_predicate : ((string # type) -> void)}

\SYNOPSIS
Creates a new predicate constant.

\DESCRIBE
The call
{
   new_predicate(`P`,":ty")
}
\noindent will declare a new predicate called {P} on type {ty}, that is, a
constant {P} of type {ty->bool}.

\FAILURE
Fails if HOL is not in draft mode, or if there is already a constant of the
corresponding name in the current theory segment.

\SEEALSO
mk_const, mk_pred.

\ENDDOC