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Expression-neg

Make-expression-neg

Basic constructor macro for expression-neg structures.

Syntax

(make-expression-neg [:arg <arg>])

This is the usual way to construct expression-neg structures. It simply conses together a structure with the specified fields.

This macro generates a new expression-neg structure from scratch. See also change-expression-neg, which can "change" an existing structure, instead.

Definition

This is an ordinary make- macro introduced by fty::defprod.

Macro: make-expression-neg

(defmacro make-expression-neg (&rest args)
  (std::make-aggregate 'expression-neg
                       args '((:arg))
                       'make-expression-neg
                       nil))

Function: expression-neg

(defun expression-neg (arg)
  (declare (xargs :guard (expressionp arg)))
  (declare (xargs :guard t))
  (let ((__function__ 'expression-neg))
    (declare (ignorable __function__))
    (b* ((arg (mbe :logic (expression-fix arg)
                   :exec arg)))
      (cons :neg (list arg)))))