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(defun makecases (a terms strict)
(when terms
(cons (format nil "~a ~a ~a"
a
(if (= strict 1) "<" "<=")
(car terms))
(makecases (car terms) (cdr terms) (- strict 1)))))
(defstep trans-ineq (&optional (fnum 1) terms (strict 0))
(let ((expr (extra-get-formula fnum)))
(if (is-relation expr t)
(let ((a (args1 expr))
(b (args2 expr))
(myt (if (listp terms) terms (list terms)))
(casestr (format nil "~{~a~#[~:; AND ~]~}"
(makecases a
(append myt (list b))
strict))))
(then
(label "TR" fnum)
(spread (case casestr)
((then (flatten) (assert))
(then (hide "TR")
(split 1))))))
(skip-msg "Not a suitable formula")))
"" "")
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