• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
    • Apt
    • Zfc
    • Acre
    • Milawa
    • Smtlink
    • Abnf
    • Vwsim
    • Isar
    • Pfcs
    • Wp-gen
    • Dimacs-reader
    • Legacy-defrstobj
    • Proof-checker-array
    • Soft
    • C
    • Farray
    • Rp-rewriter
    • Instant-runoff-voting
    • Imp-language
    • Sidekick
    • Leftist-trees
    • Java
    • Taspi
    • Riscv
      • Specification
        • Semantics
        • Features
          • Feat-base
          • Feat-endian
          • Feat
          • Feat->xnum
          • Feat->xlen
          • Feat-64p
          • Feat-32p
          • Feat-little-endianp
          • Feat-big-endianp
            • Feat-little-or-big-endianp
          • Feat-embedp
          • Feat-mp
          • Feat-rv64im-le
          • Feat-rv64em-le
          • Feat-rv32im-le
          • Feat-rv32em-le
          • Feat-rv64im-be
          • Feat-rv64i-le
          • Feat-rv64i-be
          • Feat-rv64em-be
          • Feat-rv64e-le
          • Feat-rv64e-be
          • Feat-rv32im-be
          • Feat-rv32i-le
          • Feat-rv32i-be
          • Feat-rv32em-be
          • Feat-rv32e-le
          • Feat-rv32e-be
        • States
        • Instructions
        • Encoding
        • Reads-over-writes
        • Execution
        • Decoding
      • Executable
      • Specialized
    • Bitcoin
    • Des
    • Ethereum
    • X86isa
    • Sha-2
    • Yul
    • Zcash
    • Proof-checker-itp13
    • Regex
    • ACL2-programming-language
    • Json
    • Jfkr
    • Equational
    • Cryptography
    • Poseidon
    • Where-do-i-place-my-book
    • Axe
    • Aleo
    • Bigmems
    • Builtins
    • Execloader
    • Solidity
    • Paco
    • Concurrent-programs
    • Bls12-377-curves
  • Debugging
  • Std
  • Community
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
  • Software-verification
  • Math
  • Testing-utilities

• Features

Feat-big-endianp

Check if the features indicate bit endian.

Signature

(feat-big-endianp feat) → yes/no

Arguments

feat — Guard (featp feat).

Returns

yes/no — Type (booleanp yes/no).

Definitions and Theorems

Function: feat-big-endianp

(defun feat-big-endianp (feat)
  (declare (xargs :guard (featp feat)))
  (let ((__function__ 'feat-big-endianp))
    (declare (ignorable __function__))
    (feat-endian-case (feat->endian feat)
                      :big)))

Theorem: booleanp-of-feat-big-endianp

(defthm booleanp-of-feat-big-endianp
  (b* ((yes/no (feat-big-endianp feat)))
    (booleanp yes/no))
  :rule-classes :rewrite)

Theorem: feat-big-endianp-of-feat-fix-feat

(defthm feat-big-endianp-of-feat-fix-feat
  (equal (feat-big-endianp (feat-fix feat))
         (feat-big-endianp feat)))

Theorem: feat-big-endianp-feat-equiv-congruence-on-feat

(defthm feat-big-endianp-feat-equiv-congruence-on-feat
  (implies (feat-equiv feat feat-equiv)
           (equal (feat-big-endianp feat)
                  (feat-big-endianp feat-equiv)))
  :rule-classes :congruence)

Subtopics

Feat-little-or-big-endianp

One of feat-little-endianp and feat-big-endianp always holds.