is_disj

boolSyntax.is_disj : term -> bool

Tests a term to see if it is a disjunction.

If M has the form t1 \/ t2, then is_disj M returns true. If M is not a disjunction the result is false.

Failure

Never fails.

See also

boolSyntax.mk_disj, boolSyntax.dest_disj