src/Pure/ML-Systems/proper_int.ML
author wenzelm
Sat, 27 Nov 2010 16:27:52 +0100
changeset 40747 889b7545a408
parent 35627 6cec06ef67a7
child 41619 6cac9f48f96a
permissions -rw-r--r--
more proper int wrappers;
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(*  Title:      Pure/ML-Systems/proper_int.ML
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    Author:     Makarius
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SML basis with type int representing proper integers, not machine
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words.
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*)
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val ml_system_fix_ints = true;
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val mk_int = IntInf.fromInt: Int.int -> IntInf.int;
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val dest_int = IntInf.toInt: IntInf.int -> Int.int;
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(* Int *)
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structure OrigInt = Int;
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structure OrigIntInf = IntInf;
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type int = IntInf.int;
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structure IntInf =
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struct
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  open IntInf;
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  fun fromInt (a: int) = a;
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  fun toInt (a: int) = a;
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  val log2 = mk_int o IntInf.log2;
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  val sign = mk_int o IntInf.sign;
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end;
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structure Int = IntInf;
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(* List *)
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structure List =
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struct
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  open List;
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  fun length a = mk_int (List.length a);
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  fun nth (a, b) = List.nth (a, dest_int b);
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  fun take (a, b) = List.take (a, dest_int b);
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  fun drop (a, b) = List.drop (a, dest_int b);
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  fun tabulate (a, b) = List.tabulate (dest_int a, b o mk_int);
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end;
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val length = List.length;
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(* Array *)
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structure Array =
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struct
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  open Array;
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  val maxLen = mk_int Array.maxLen;
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  fun array (a, b) = Array.array (dest_int a, b);
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  fun tabulate (a, b) = Array.tabulate (dest_int a, b o mk_int);
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  fun length a = mk_int (Array.length a);
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  fun sub (a, b) = Array.sub (a, dest_int b);
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  fun update (a, b, c) = Array.update (a, dest_int b, c);
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  fun copy {src, dst, di} = Array.copy {src = src, dst = dst, di = dest_int di};
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  fun copyVec {src, dst, di} = Array.copyVec {src = src, dst = dst, di = dest_int di};
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  fun appi a b = Array.appi (fn (x, y) => a (mk_int x, y)) b;
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  fun modifyi a b = Array.modifyi (fn (x, y) => a (mk_int x, y)) b;
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  fun foldli a b c = Array.foldli (fn (x, y, z) => a (mk_int x, y, z)) b c;
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  fun foldri a b c = Array.foldri (fn (x, y, z) => a (mk_int x, y, z)) b c;
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  fun findi a b =
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    (case Array.findi (fn (x, y) => a (mk_int x, y)) b of
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      NONE => NONE
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    | SOME (c, d) => SOME (mk_int c, d));
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end;
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(* Vector *)
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structure Vector =
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struct
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  open Vector;
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  val maxLen = mk_int Vector.maxLen;
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  fun tabulate (a, b) = Vector.tabulate (dest_int a, b o mk_int);
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  fun length a = mk_int (Vector.length a);
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  fun sub (a, b) = Vector.sub (a, dest_int b);
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  fun update (a, b, c) = Vector.update (a, dest_int b, c);
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  fun appi a b = Vector.appi (fn (x, y) => a (mk_int x, y)) b;
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  fun mapi a b = Vector.mapi (fn (x, y) => a (mk_int x, y)) b;
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  fun foldli a b c = Vector.foldli (fn (x, y, z) => a (mk_int x, y, z)) b c;
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  fun foldri a b c = Vector.foldri (fn (x, y, z) => a (mk_int x, y, z)) b c;
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  fun findi a b =
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    (case Vector.findi (fn (x, y) => a (mk_int x, y)) b of
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      NONE => NONE
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    | SOME (c, d) => SOME (mk_int c, d));
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end;
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(* Char *)
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structure Char =
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struct
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  open Char;
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  val maxOrd = mk_int Char.maxOrd;
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  val chr = Char.chr o dest_int;
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  val ord = mk_int o Char.ord;
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end;
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val chr = Char.chr;
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val ord = Char.ord;
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(* String *)
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structure String =
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struct
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  open String;
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  val maxSize = mk_int String.maxSize;
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  val size = mk_int o String.size;
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  fun sub (a, b) = String.sub (a, dest_int b);
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  fun extract (a, b, c) = String.extract (a, dest_int b, Option.map dest_int c);
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  fun substring (a, b, c) = String.substring (a, dest_int b, dest_int c);
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end;
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val size = String.size;
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val substring = String.substring;
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(* Substring *)
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structure Substring =
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struct
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  open Substring;
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  fun sub (a, b) = Substring.sub (a, dest_int b);
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  val size = mk_int o Substring.size;
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  fun base a = let val (b, c, d) = Substring.base a in (b, mk_int c, mk_int d) end;
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  fun extract (a, b, c) = Substring.extract (a, dest_int b, Option.map dest_int c);
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  fun substring (a, b, c) = Substring.substring (a, dest_int b, dest_int c);
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  fun triml a b = Substring.triml (dest_int a) b;
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  fun trimr a b = Substring.trimr (dest_int a) b;
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  fun slice (a, b, c) = Substring.slice (a, dest_int b, Option.map dest_int c);
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  fun splitAt (a, b) = Substring.splitAt (a, dest_int b);
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end;
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(* StringCvt *)
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structure StringCvt =
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struct
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  open StringCvt;
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  datatype realfmt = EXACT | FIX of int option | GEN of int option | SCI of int option
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  fun realfmt fmt = Real.fmt
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    (case fmt of
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      EXACT => StringCvt.EXACT
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    | FIX NONE => StringCvt.FIX NONE
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    | FIX (SOME b) => StringCvt.FIX (SOME (dest_int b))
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    | GEN NONE => StringCvt.GEN NONE
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    | GEN (SOME b) => StringCvt.GEN (SOME (dest_int b))
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    | SCI NONE => StringCvt.SCI NONE
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    | SCI (SOME b) => StringCvt.SCI (SOME (dest_int b)));
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end;
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(* Word *)
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structure Word =
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struct
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  open Word;
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  val wordSize = mk_int Word.wordSize;
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  val toInt = mk_int o Word.toInt;
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  val toIntX = mk_int o Word.toIntX;
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  val fromInt = Word.fromInt o dest_int;
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end;
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structure Word8 =
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struct
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  open Word8;
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  val wordSize = mk_int Word8.wordSize;
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  val toInt = mk_int o Word8.toInt;
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  val toIntX = mk_int o Word8.toIntX;
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  val fromInt = Word8.fromInt o dest_int;
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end;
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structure Word32 =
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struct
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  open Word32;
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  val wordSize = mk_int Word32.wordSize;
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  val toInt = mk_int o Word32.toInt;
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  val toIntX = mk_int o Word32.toIntX;
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  val fromInt = Word32.fromInt o dest_int;
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end;
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structure LargeWord =
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struct
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  open LargeWord;
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  val wordSize = mk_int LargeWord.wordSize;
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  val toInt = mk_int o LargeWord.toInt;
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  val toIntX = mk_int o LargeWord.toIntX;
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  val fromInt = LargeWord.fromInt o dest_int;
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end;
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(* Real *)
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structure Real =
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struct
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  open Real;
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  val radix = mk_int Real.radix;
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  val precision = mk_int Real.precision;
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  fun sign a = mk_int (Real.sign a);
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  fun toManExp a = let val {man, exp} = Real.toManExp a in {man = man, exp = mk_int exp} end;
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  fun fromManExp {man, exp} = Real.fromManExp {man = man, exp = dest_int exp};
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  val ceil = mk_int o Real.ceil;
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  val floor = mk_int o Real.floor;
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  val real = Real.fromInt o dest_int;
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  val round = mk_int o Real.round;
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  val trunc = mk_int o Real.trunc;
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  fun toInt a b = mk_int (Real.toInt a b);
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  fun fromInt a = Real.fromInt (dest_int a);
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  val fmt = StringCvt.realfmt;
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end;
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val ceil = Real.ceil;
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val floor = Real.floor;
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val real = Real.real;
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val round = Real.round;
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val trunc = Real.trunc;
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(* TextIO *)
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structure TextIO =
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struct
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  open TextIO;
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  fun inputN (a, b) = TextIO.inputN (a, dest_int b);
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  fun canInput (a, b) = Option.map mk_int (TextIO.canInput (a, dest_int b));
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end;
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(* Time *)
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structure Time =
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struct
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  open Time;
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  fun fmt a b = Time.fmt (dest_int a) b;
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end;
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