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authordos-reis <gdr@axiomatics.org>2007-11-17 22:32:35 +0000
committerdos-reis <gdr@axiomatics.org>2007-11-17 22:32:35 +0000
commit911b4270fa735440bcca46ffa70c3e541c806953 (patch)
treed0af9166da8e078f2ecb5ea91886a50bc6fa6831 /src/interp/clammed.boot.pamphlet
parent016dfe5e315ee3ffb914813e68df4e5202dc7308 (diff)
downloadopen-axiom-911b4270fa735440bcca46ffa70c3e541c806953.tar.gz
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-\documentclass{article}
-\usepackage{axiom}
-\begin{document}
-\title{\$SPAD/src/interp clammed.boot}
-\author{The Axiom Team}
-\maketitle
-\begin{abstract}
-\end{abstract}
-\eject
-\tableofcontents
-\eject
-\section{License}
-<<license>>=
--- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
--- All rights reserved.
---
--- Redistribution and use in source and binary forms, with or without
--- modification, are permitted provided that the following conditions are
--- met:
---
--- - Redistributions of source code must retain the above copyright
--- notice, this list of conditions and the following disclaimer.
---
--- - Redistributions in binary form must reproduce the above copyright
--- notice, this list of conditions and the following disclaimer in
--- the documentation and/or other materials provided with the
--- distribution.
---
--- - Neither the name of The Numerical ALgorithms Group Ltd. nor the
--- names of its contributors may be used to endorse or promote products
--- derived from this software without specific prior written permission.
---
--- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
--- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
--- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
--- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
--- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
--- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
--- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
--- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
--- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
--- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
--- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-@
-<<*>>=
-<<license>>
-import '"g-timer"
-)package "BOOT"
-)eval BOOTTRAN::$bfClamming := true
-
---% Functions on $clamList
-
--- These files are read in by the system so that they can be cached
--- properly. Otherwise, must read in compiled versions and then
--- recompile these, resulting in wasted BPI space.
-
-canCoerceFrom(mr,m) ==
- -- bind flag for recording/reporting instantiations
- -- (see recordInstantiation)
- $insideCanCoerceFrom: local := [mr,m]
- canCoerceFrom0(mr,m)
-
-canCoerce(t1, t2) ==
- val := canCoerce1(t1, t2) => val
- t1 is ['Variable, :.] =>
- newMode := getMinimalVarMode(t1, nil)
- canCoerce1(t1, newMode) and canCoerce1(newMode, t2)
- nil
-
-coerceConvertMmSelection(funName,m1,m2) ==
- -- calls selectMms with $Coerce=NIL and tests for required
- -- target type. funName is either 'coerce or 'convert.
- $declaredMode : local:= NIL
- $reportBottomUpFlag : local:= NIL
- l := selectMms1(funName,m2,[m1],[m1],NIL)
- mmS := [[sig,[targ,arg],:pred] for x in l | x is [sig,[.,arg],:pred] and
- hasCorrectTarget(m2,sig) and sig is [dc,targ,oarg] and oarg = m1]
- mmS and CAR mmS
-
-hasFileProperty(p,id,abbrev) == hasFilePropertyNoCache(p,id,abbrev)
-
-isValidType form ==
- -- returns true IFF form is a type whose arguments satisfy the
- -- predicate of the type constructor
- -- Note that some forms are said to be invalid because they would
- -- cause problems with the interpreter. Thus things like P P I
- -- are not valid.
- STRINGP form => true
- IDENTP form => false
- form in '((Mode) (Domain) (SubDomain (Domain))) => true
- form is ['Record,:selectors] =>
- and/[isValidType type for [:.,type] in selectors]
- form is ['Enumeration,:args] =>
- null (and/[IDENTP x for x in args]) => false
- ((# args) = (# REMDUP args)) => true
- false
- form is ['Mapping,:mapargs] =>
- null mapargs => NIL
- and/[isValidType type for type in mapargs]
- form is ['Union,:args] =>
- -- check for a tagged union
- args and first args is [":",:.] =>
- and/[isValidType type for [:.,type] in args]
- null (and/[isValidType arg for arg in args]) => NIL
- ((# args) = (# REMDUP args)) => true
- sayKeyedMsg("S2IR0005",[form])
- NIL
-
- badDoubles := CONS($QuotientField, '(Gaussian Complex Polynomial Expression))
- form is [T1, [T2, :.]] and T1 = T2 and member(T1, badDoubles) => NIL
-
- form is [=$QuotientField,D] and not isPartialMode(D) and
- ofCategory(D,'(Field)) => NIL
- form is ['UnivariatePolynomial, x, ['UnivariatePolynomial, y, .]] and x=y =>
- NIL
- form = '(Complex (AlgebraicNumber)) => NIL
- form is ['Expression, ['Kernel, . ]] => NIL
- form is [op,:argl] =>
- null constructor? op => nil
- cosig := GETDATABASE(op, 'COSIG)
- cosig and null rest cosig => -- niladic constructor
- null argl => true
- false
- null (sig := getConstructorSignature form) => nil
- [.,:cl] := sig
- -- following line is needed to deal with mutable domains
- if # cl ^= # argl and GENSYMP last argl then argl:= DROP(-1,argl)
- # cl ^= # argl => nil
- cl:= replaceSharps(cl,form)
- and/[isValid for x in argl for c in cl] where isValid() ==
- categoryForm?(c) =>
- evalCategory(x,MSUBSTQ(x,'_$,c)) and isValidType x
- GETDATABASE(opOf x,'CONSTRUCTORKIND) ^= 'domain
-
-selectMms1(op,tar,args1,args2,$Coerce) ==
- -- for new compiler/old world compatibility, sometimes have to look
- -- for operations given two names.
-
- -- NEW COMPILER COMPATIBILITY ON
-
- op = "^" or op = "**" =>
- APPEND(selectMms2("**",tar,args1,args2,$Coerce),
- selectMms2("^",tar,args1,args2,$Coerce))
-
- -- NEW COMPILER COMPATIBILITY OFF
-
- selectMms2(op,tar,args1,args2,$Coerce)
-
-
-resolveTT(t1,t2) ==
- -- resolves two types
- -- this symmetric resolve looks for a type t to which both t1 and t2
- -- can be coerced
- -- if resolveTT fails, the result will be NIL
- startTimingProcess 'resolve
- t1 := eqType t1
- t2 := eqType t2
- null (t := resolveTT1(t1,t2)) =>
- stopTimingProcess 'resolve
- nil
- isValidType (t := eqType t) =>
- stopTimingProcess 'resolve
- t
- stopTimingProcess 'resolve
- nil
-
-isLegitimateMode(t,hasPolyMode,polyVarList) ==
- -- returns true IFF t is a valid type. i.e. if t has no repeated
- -- variables, or two levels of Polynomial
- null t => true -- a terminating condition with underDomainOf
- t = $EmptyMode => true
- STRINGP t => true
- ATOM t => false
-
- badDoubles := CONS($QuotientField, '(Gaussian Complex Polynomial Expression))
- t is [T1, [T2, :.]] and T1 = T2 and member(T1, badDoubles) => NIL
-
- t is [=$QuotientField,D] and not isPartialMode(D) and
- ofCategory(D,'(Field)) => NIL
- t = '(Complex (AlgebraicNumber)) => NIL
-
- t := equiType t
- vl := isPolynomialMode t =>
- if vl^='all then
- var:= or/[(x in polyVarList => x;nil) for x in vl] => return false
- listOfDuplicates vl => return false
- polyVarList:= union(vl,polyVarList)
- hasPolyMode => false
- con := CAR t
- poly? := (con = 'Polynomial or con = 'Expression)
- isLegitimateMode(underDomainOf t,poly?,polyVarList)
-
- constructor? first t =>
- isLegitimateMode(underDomainOf t,hasPolyMode,polyVarList) => t
- t is ['Mapping,:ml] =>
- null ml => NIL
- -- first arg is target, which can be Void
- null isLegitimateMode(first ml,nil,nil) => NIL
- for m in rest ml repeat
- m = $Void =>
- return NIL
- null isLegitimateMode(m,nil,nil) => return NIL
- true
- t is ['Union,:ml] =>
- -- check for tagged union
- ml and first ml is [":",:.] => isLegitimateRecordOrTaggedUnion ml
- null (and/[isLegitimateMode(m,nil,nil) for m in ml]) => NIL
- ((# ml) = (# REMDUP ml)) => true
- NIL
- t is ['Record,:r] => isLegitimateRecordOrTaggedUnion r
- t is ['Enumeration,:r] =>
- null (and/[IDENTP x for x in r]) => false
- ((# r) = (# REMDUP r)) => true
- false
- false
-
-underDomainOf t ==
- t = $RationalNumber => $Integer
- not PAIRP t => NIL
- d := deconstructT t
- 1 = #d => NIL
- u := getUnderModeOf(t) => u
- last d
-
-@
-\eject
-\begin{thebibliography}{99}
-\bibitem{1} nothing
-\end{thebibliography}
-\end{document}