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-\documentclass{article}
-\usepackage{open-axiom}
-\begin{document}
-\title{\$SPAD/src/algebra functions.spad}
-\author{Brian Dupee}
-\maketitle
-\begin{abstract}
-\end{abstract}
-\eject
-\tableofcontents
-\eject
-\section{domain BFUNCT BasicFunctions}
-<<domain BFUNCT BasicFunctions>>=
-)abbrev domain BFUNCT BasicFunctions
-++ Author: Brian Dupee
-++ Date Created: August 1994
-++ Date Last Updated: April 1996
-++ Basic Operations: bfKeys, bfEntry
-++ Description: A Domain which implements a table containing details of
-++ points at which particular functions have evaluation problems.
-DF ==> DoubleFloat
-SDF ==> Stream DoubleFloat
-RS ==> Record(zeros: SDF, ones: SDF, singularities: SDF)
-
-BasicFunctions(): E == I where
- E ==> SetCategory with
- bfKeys:() -> List Symbol
- ++ bfKeys() returns the names of each function in the
- ++ \axiomType{BasicFunctions} table
- bfEntry:Symbol -> RS
- ++ bfEntry(k) returns the entry in the \axiomType{BasicFunctions} table
- ++ corresponding to \spad{k}
- finiteAggregate
-
- I ==> add
-
- Rep := Table(Symbol,RS)
- import Rep, SDF
-
- f(x:DF):DF ==
- positive?(x) => -x
- -x+1
-
- bf():$ ==
- import RS
- dpi := pi()$DF
- ndpi:SDF := map(#1*dpi,(z := generate(f,0))) -- [n pi for n in Z]
- n1dpi:SDF := map(-(2*(#1)-1)*dpi/2,z) -- [(n+1) pi /2]
- n2dpi:SDF := map(2*#1*dpi,z) -- [2 n pi for n in Z]
- n3dpi:SDF := map(-(4*(#1)-1)*dpi/4,z)
- n4dpi:SDF := map(-(4*(#1)-1)*dpi/2,z)
- sinEntry:RS := [ndpi, n4dpi, empty()$SDF]
- cosEntry:RS := [n1dpi, n2dpi, esdf := empty()$SDF]
- tanEntry:RS := [ndpi, n3dpi, n1dpi]
- asinEntry:RS := [construct([0$DF])$SDF,
- construct([float(8414709848078965,-16,10)$DF]), esdf]
- acosEntry:RS := [construct([1$DF])$SDF,
- construct([float(54030230586813977,-17,10)$DF]), esdf]
- atanEntry:RS := [construct([0$DF])$SDF,
- construct([float(15574077246549023,-16,10)$DF]), esdf]
- secEntry:RS := [esdf, n2dpi, n1dpi]
- cscEntry:RS := [esdf, n4dpi, ndpi]
- cotEntry:RS := [n1dpi, n3dpi, ndpi]
- logEntry:RS := [construct([1$DF])$SDF,esdf, construct([0$DF])$SDF]
- entryList:List(Record(key:Symbol,entry:RS)) :=
- [['sin, sinEntry], ['cos, cosEntry],
- ['tan, tanEntry], ['sec, secEntry],
- ['csc, cscEntry], ['cot, cotEntry],
- ['asin, asinEntry], ['acos, acosEntry],
- ['atan, atanEntry], ['log, logEntry]]
- construct(entryList)$Rep
-
- bfKeys():List Symbol == keys(bf())$Rep
-
- bfEntry(k:Symbol):RS == qelt(bf(),k)$Rep
-
-@
-\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>>
-
-<<domain BFUNCT BasicFunctions>>
-@
-\eject
-\begin{thebibliography}{99}
-\bibitem{1} nothing
-\end{thebibliography}
-\end{document}