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Sinteger-format

Make-sinteger-format

Basic constructor macro for sinteger-format structures.

Syntax

(make-sinteger-format [:bits <bits>] 
                      [:signed <signed>] 
                      [:traps <traps>])

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

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

Definition

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

Macro: make-sinteger-format

(defmacro make-sinteger-format (&rest args)
  (std::make-aggregate 'sinteger-format
                       args '((:bits) (:signed) (:traps))
                       'make-sinteger-format
                       nil))

Function: sinteger-format

(defun sinteger-format (bits signed traps)
  (declare (xargs :guard (and (sinteger-bit-role-listp bits)
                              (signed-formatp signed))))
  (declare (xargs :guard (sinteger-bit-roles-wfp bits)))
  (let ((__function__ 'sinteger-format))
    (declare (ignorable __function__))
    (b* ((bits (mbe :logic (sinteger-bit-role-list-fix bits)
                    :exec bits))
         (signed (mbe :logic (signed-format-fix signed)
                      :exec signed)))
      (let ((bits (mbe :logic
                       (if (sinteger-bit-roles-wfp bits)
                           bits
                         (list (sinteger-bit-role-sign)
                               (sinteger-bit-role-value 0)))
                       :exec bits)))
        (list (cons 'bits bits)
              (cons 'signed signed)
              (cons 'traps traps))))))