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\DOC dest_intconst
\TYPE {dest_intconst : term -> num}
\SYNOPSIS
Converts an integer literal of type {:int} to an OCaml number.
\DESCRIBE
The call {dest_intconst t} where {t} is a canonical integer literal of type
{:int}, returns the corresponding OCaml number (type {num}). The permissible
forms of integer literals are `{&n}' for a numeral {n} or `{-- &n}' for a
nonzero numeral {n}.
\FAILURE
Fails if applied to a term that is not a canonical integer literal of type
{:int}.
\EXAMPLE
{
# dest_intconst `-- &11 :int`;;
val it : num = -11
}
\SEEALSO
dest_realintconst, is_intconst, mk_intconst.
\ENDDOC
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