--- a/src/HOL/Word/WordDefinition.thy Tue Aug 21 00:24:10 2007 +0200
+++ b/src/HOL/Word/WordDefinition.thy Tue Aug 21 01:07:05 2007 +0200
@@ -176,83 +176,6 @@
"clearBit w n == set_bit w n False"
-subsection "Shift operations"
-
-constdefs
- shiftl1 :: "'a :: len0 word => 'a word"
- "shiftl1 w == word_of_int (uint w BIT bit.B0)"
-
- -- "shift right as unsigned or as signed, ie logical or arithmetic"
- shiftr1 :: "'a :: len0 word => 'a word"
- "shiftr1 w == word_of_int (bin_rest (uint w))"
-
- sshiftr1 :: "'a :: len word => 'a word"
- "sshiftr1 w == word_of_int (bin_rest (sint w))"
-
- bshiftr1 :: "bool => 'a :: len word => 'a word"
- "bshiftr1 b w == of_bl (b # butlast (to_bl w))"
-
- sshiftr :: "'a :: len word => nat => 'a word" (infixl ">>>" 55)
- "w >>> n == (sshiftr1 ^ n) w"
-
- mask :: "nat => 'a::len word"
- "mask n == (1 << n) - 1"
-
- revcast :: "'a :: len0 word => 'b :: len0 word"
- "revcast w == of_bl (takefill False (len_of TYPE('b)) (to_bl w))"
-
- slice1 :: "nat => 'a :: len0 word => 'b :: len0 word"
- "slice1 n w == of_bl (takefill False n (to_bl w))"
-
- slice :: "nat => 'a :: len0 word => 'b :: len0 word"
- "slice n w == slice1 (size w - n) w"
-
-
-defs (overloaded)
- shiftl_def: "(w::'a::len0 word) << n == (shiftl1 ^ n) w"
- shiftr_def: "(w::'a::len0 word) >> n == (shiftr1 ^ n) w"
-
-
-subsection "Rotation"
-
-constdefs
- rotater1 :: "'a list => 'a list"
- "rotater1 ys ==
- case ys of [] => [] | x # xs => last ys # butlast ys"
-
- rotater :: "nat => 'a list => 'a list"
- "rotater n == rotater1 ^ n"
-
- word_rotr :: "nat => 'a :: len0 word => 'a :: len0 word"
- "word_rotr n w == of_bl (rotater n (to_bl w))"
-
- word_rotl :: "nat => 'a :: len0 word => 'a :: len0 word"
- "word_rotl n w == of_bl (rotate n (to_bl w))"
-
- word_roti :: "int => 'a :: len0 word => 'a :: len0 word"
- "word_roti i w == if i >= 0 then word_rotr (nat i) w
- else word_rotl (nat (- i)) w"
-
-
-subsection "Split and cat operations"
-
-constdefs
- word_cat :: "'a :: len0 word => 'b :: len0 word => 'c :: len0 word"
- "word_cat a b == word_of_int (bin_cat (uint a) (len_of TYPE ('b)) (uint b))"
-
- word_split :: "'a :: len0 word => ('b :: len0 word) * ('c :: len0 word)"
- "word_split a ==
- case bin_split (len_of TYPE ('c)) (uint a) of
- (u, v) => (word_of_int u, word_of_int v)"
-
- word_rcat :: "'a :: len0 word list => 'b :: len0 word"
- "word_rcat ws ==
- word_of_int (bin_rcat (len_of TYPE ('a)) (map uint ws))"
-
- word_rsplit :: "'a :: len0 word => 'b :: len word list"
- "word_rsplit w ==
- map word_of_int (bin_rsplit (len_of TYPE ('b)) (len_of TYPE ('a), uint w))"
-
constdefs
-- "Largest representable machine integer."
max_word :: "'a::len word"
@@ -897,7 +820,6 @@
lemmas ucast_down_bl = ucast_down_bl' [OF refl]
-lemmas slice_def' = slice_def [unfolded word_size]
lemmas test_bit_def' = word_test_bit_def [THEN meta_eq_to_obj_eq, THEN fun_cong]
lemmas word_log_defs = word_and_def word_or_def word_xor_def word_not_def