• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Std
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
    • Gl
    • Esim
    • Vl2014
    • Sv
      • Svex-stvs
      • Svex-decomposition-methodology
      • Sv-versus-esim
      • Svex-decomp
      • Svex-compose-dfs
      • Svex-compilation
      • Moddb
      • Svmods
      • Svstmt
      • Sv-tutorial
      • Expressions
      • Symbolic-test-vector
      • Vl-to-svex
        • Vl-to-sv
        • Vl-design->sv-design
          • Vl-simpconfig
          • Vl-hierarchy-sv-translation
          • Vl-expr-svex-translation
            • Sv::vl-expr.lisp
              • Vl-scopecontext-to-addr
              • Vl-binaryop-to-svex
              • Vl-expr-to-svex-maybe-typed
              • Vl-datatype-syscall-to-svex
              • Vl-operandinfo-to-svex-preproc
              • Vl-structmemberlist->types
              • Vl-seltrace-to-svex-select
              • Vl-portdecllist->types
              • Vl-operandinfo-to-svex-select
              • Vl-plusminus-partselect->svex
              • Vl-arrayrange->rel-lsb-and-width
              • Vl-unaryop-to-svex
              • Vl-funcall-args-to-ordered
              • Vl-expr-to-svex-lhs
              • Vl-operandinfo-to-svex
              • Vl-array-assignpat-keyval-resolve
              • Vl-err->vfatal
              • Vl-datatypelist-usertype-resolve
              • Vl-upscope-to-svex-upscope
              • Vl-err->fatal
              • Vl-streaming-concat-trunc/extend
              • Vl-operandinfo-base-svar
              • Vl-index-shift-amount
              • Vttree->constraints
              • Vl-slicesize-resolve
              • Vl-function-map-find-matching-aux
              • Vl-funname-lookup
              • Vl-datatype-size-warn
              • Svex-repeat-aux
              • Vl-$test$plusargs-to-svex
              • Svex-extend
              • Vl-structmemberlist-shift-bits
              • Vl-datatype-slot-width/range
              • Vl-datatype-index-shift-amount
              • Vl-datatype-field-shift-amount
              • 4vec-extend
              • Vl-function-pair-inputs-with-actuals
              • Vl-expr-to-svex-untyped
              • Vl-function-map-check-matching
              • Vl-datatype-syscall-remove-dims
              • Svex-concat-list-aux
              • Vttree-add-constraints
              • Vttree-add-warnings
              • Vl-check-struct-assignpat-keys
              • Vl-check-array-assignpat-keys
              • Sv::constraintlist-subst-memo
              • Vl-svex-keyval-index-lookup
              • Vl-function-map-find-matching
              • Vl-convert-dollarsign-to-expr
              • Vttree->constraints-acc
              • Vl-seltrace-type
              • Vl-seltrace-to-path
              • Vl-keyval-member-lookup
              • Svex-repeat
              • Vttree->warnings-acc
              • Vl-trunc/extend-type-err
              • Constraintlist-add-ctx
              • Vl-hidtrace-add-to-path
              • Svex-multiconcat
              • Vttree-join
              • Vl-value-to-string-aux
              • Vl-seltrace-add-to-path
              • Vl-value-to-4vec
              • Vl-expr-to-svex-selfdet
              • Vl-svex-keyval-default-lookup
              • Vl-$test$plusargs-p
              • Vl-value-to-svex
              • Vl-value-in-range
              • Vl-keyval-default-lookup
              • Sv::svexlist-args-extract-constants
              • Vl-string->bits
              • Vl-size-to-unsigned-logic
              • Vl-hidtrace-to-path
              • Svex-concat-list
              • Vttree->warnings
              • Vl-seltrace-unres-count
              • Vl-datatype-index-is-bitselect
              • Vl-bitlist->4vec
              • Vl-svex-keyvallist-vars
              • Vl-hidstep->svex-index
              • Vl-selstep->svex-name
              • Vl-datatypelist-resolved-p
              • Vl-datatype-$unpacked_dimensions
              • Vl-datatype-$dimensions
              • Vl-bitlist->offset
              • Vl-bitlist->onset
              • Vl-streamexprlist-has-with
              • Vl-hidstep-resolved-p
              • Vl-expr-needs-type-context
              • Vl-streamexprlist->exprs
              • Vl-integer-to-string
              • Vl-hidtrace-resolved-p
              • Vl-selstep-resolved-p
              • Vl-select-resolved-p
              • Vl-svex-keyvallist
              • Vl-datatypelist
              • Svex-x
            • Vttree
          • Vl-design->svex-modalist
          • Vl-svstmt
        • Vl-to-sv-main
        • Vl-simplify-sv
        • Vl-user-paramsettings->unparam-names
        • Vl-user-paramsettings->modnames
    • Vwsim
    • Fgl
    • Vl
    • X86isa
    • Svl
    • Rtl
  • Software-verification
  • Math
  • Testing-utilities

• Sv::vl-expr.lisp

Vl-streaming-concat-trunc/extend

Signature

(vl-streaming-concat-trunc/extend bitstream target-size concat-size) 
  → 
ans

Arguments

bitstream — Guard (sv::svex-p bitstream).

target-size — Guard (natp target-size).

concat-size — Guard (natp concat-size).

Returns

ans — Type (sv::svex-p ans).

Definitions and Theorems

Function: vl-streaming-concat-trunc/extend

(defun vl-streaming-concat-trunc/extend
       (bitstream target-size concat-size)
  (declare (xargs :guard (and (sv::svex-p bitstream)
                              (natp target-size)
                              (natp concat-size))))
  (let ((__function__ 'vl-streaming-concat-trunc/extend))
    (declare (ignorable __function__))
    (b* ((target-size (lnfix target-size))
         (concat-size (lnfix concat-size)))
      (cond ((> target-size concat-size)
             (sv::svcall sv::concat
                         (svex-int (- target-size concat-size))
                         (svex-int 0)
                         bitstream))
            ((< target-size concat-size)
             (sv::svex-rsh (- concat-size target-size)
                           bitstream))
            (t (sv::svex-fix bitstream))))))

Theorem: svex-p-of-vl-streaming-concat-trunc/extend

(defthm svex-p-of-vl-streaming-concat-trunc/extend
  (b* ((ans (vl-streaming-concat-trunc/extend
                 bitstream target-size concat-size)))
    (sv::svex-p ans))
  :rule-classes :rewrite)

Theorem: vars-of-vl-streaming-concat-trunc/extend

(defthm vars-of-vl-streaming-concat-trunc/extend
  (b* ((?ans (vl-streaming-concat-trunc/extend
                  bitstream target-size concat-size)))
    (implies (not (member v (sv::svex-vars bitstream)))
             (not (member v (sv::svex-vars ans))))))

Theorem: vl-streaming-concat-trunc/extend-of-svex-fix-bitstream

(defthm vl-streaming-concat-trunc/extend-of-svex-fix-bitstream
  (equal (vl-streaming-concat-trunc/extend (sv::svex-fix bitstream)
                                           target-size concat-size)
         (vl-streaming-concat-trunc/extend
              bitstream target-size concat-size)))

Theorem: vl-streaming-concat-trunc/extend-svex-equiv-congruence-on-bitstream

(defthm
 vl-streaming-concat-trunc/extend-svex-equiv-congruence-on-bitstream
 (implies
   (sv::svex-equiv bitstream bitstream-equiv)
   (equal
        (vl-streaming-concat-trunc/extend
             bitstream target-size concat-size)
        (vl-streaming-concat-trunc/extend bitstream-equiv
                                          target-size concat-size)))
 :rule-classes :congruence)

Theorem: vl-streaming-concat-trunc/extend-of-nfix-target-size

(defthm vl-streaming-concat-trunc/extend-of-nfix-target-size
 (equal
      (vl-streaming-concat-trunc/extend bitstream (nfix target-size)
                                        concat-size)
      (vl-streaming-concat-trunc/extend
           bitstream target-size concat-size)))

Theorem: vl-streaming-concat-trunc/extend-nat-equiv-congruence-on-target-size

(defthm
 vl-streaming-concat-trunc/extend-nat-equiv-congruence-on-target-size
 (implies (acl2::nat-equiv target-size target-size-equiv)
          (equal (vl-streaming-concat-trunc/extend
                      bitstream target-size concat-size)
                 (vl-streaming-concat-trunc/extend
                      bitstream
                      target-size-equiv concat-size)))
 :rule-classes :congruence)

Theorem: vl-streaming-concat-trunc/extend-of-nfix-concat-size

(defthm vl-streaming-concat-trunc/extend-of-nfix-concat-size
 (equal
   (vl-streaming-concat-trunc/extend bitstream
                                     target-size (nfix concat-size))
   (vl-streaming-concat-trunc/extend
        bitstream target-size concat-size)))

Theorem: vl-streaming-concat-trunc/extend-nat-equiv-congruence-on-concat-size

(defthm
 vl-streaming-concat-trunc/extend-nat-equiv-congruence-on-concat-size
 (implies (acl2::nat-equiv concat-size concat-size-equiv)
          (equal (vl-streaming-concat-trunc/extend
                      bitstream target-size concat-size)
                 (vl-streaming-concat-trunc/extend
                      bitstream
                      target-size concat-size-equiv)))
 :rule-classes :congruence)