is_disj : term -> bool
- SYNOPSIS
-
Tests a term to see if it is a disjunction.
- DESCRIBE
-
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.
- SEEALSO mk_disj,
dest_disj
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