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SandBoxMyReduce
  
last edited 16 years ago by Bill Page

Edit detail for SandBoxMyReduce revision 14 of 14
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Editor: Bill Page
Time: 2008/04/08 15:38:53 GMT-7
Note: FriCAS version 
added:

From BillPage Tue Apr 8 15:38:53 -0700 2008
From: Bill Page
Date: Tue, 08 Apr 2008 15:38:53 -0700
Subject: FriCAS version
Message-ID: <20080408153853-0700@axiom-wiki.newsynthesis.org>

SandBoxMyReduceInFriCAS


\begin{spad}
)abbrev package MYRED MyReduce
MyReduce(S:Type): with
    myred: ((S,S)->S,List S) -> S
 == add
   -- Waldek's local helper function
   ((f:(S,S)->S) = (g:(S,S)->S)):Boolean ==
      --print(coerceMap2E(f)$Lisp::OutputForm)
      --print(coerceMap2E(g)$Lisp::OutputForm)
      EQ(f,g)$Lisp
   --
   import NonNegativeInteger
   myred(f:(S,S)->S, x:List S):S ==
     if #x>1 then
       f(first x, myred(f,rest x))
     else if #x=1 then
       first x
     else
       if S has AbelianMonoid then
         -- Must force "newGoGet" by applying operations before comparison!
         f(0,0)=(0+0)$S and (f = _+$S) => return 0$S
       if S has Monoid then
         f(1,1)=(11)$S and (f = _$S) => return 1$S
       error "reducing over an empty list needs the 3 argument form"
\end{spad}


\begin{axiom}
myred(+,[1,2,3,4])
myred(+,[]$List Integer)
myred(*,[1,2,3,4])
myred(*,[]$List Integer)


\end{axiom}





OpenAxiom version --Bill Page,  Tue, 08 Apr 2008 15:26:44 -0700 reply
SandBoxMyReduceInOpenAxiom


FriCAS version --Bill Page,  Tue, 08 Apr 2008 15:38:53 -0700 reply
SandBoxMyReduceInFriCAS



    Some or all expressions may not have rendered properly,
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Error: export FRICAS=/usr/local/lib/open-axiom/x86_64-unknown-linux/1.1.0-2008-01-28; export ALDORROOT=/usr/local/aldor/linux/1.1.0; export PATH=$ALDORROOT/bin:$PATH; export HOME=/var/zope2/var/LatexWiki; ulimit -t 600; export LD_LIBRARY_PATH=/usr/local/lib/open-axiom/x86_64-unknown-linux/1.1.0-2008-01-28/lib; LANG=en_US.UTF-8 $FRICAS/bin/FRICASsys < /var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/3373524299801295110-25px.axm
/bin/sh: /usr/local/lib/open-axiom/x86_64-unknown-linux/1.1.0-2008-01-28/bin/FRICASsys: not found
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l.134      if #
               x>1 then
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l.136      else if #
                    x=1 then
 Missing $ inserted.
<inserted text> 
                $
l.141          f(0,0)=(0+0)$S and (f = _
                                        +$S) => return 0$S
 Missing $ inserted.
<inserted text> 
                $
l.143          f(1,1)=(11)$S and (f = _
                                        $S) => return 1$S
 Missing $ inserted.
<inserted text> 
                $
l.145 \end{spad}
                \newpage
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