Advanced Programming Guide

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7 <strong>Advanced</strong> ConnectivityIn This Chapter• Code Generation• Using Compiled Code in Maple• System IntegrityCode GenerationThe CodeGeneration package provides utilities for translating Maple codeinto other programming languages such as C, Fortran, and Java. Theresulting code can be compiled and used independent of Maple.Using Compiled Code in MapleCompiled code can be seamlessly integrated into Maple. Maple can executefunctions written in C, Fortran, or Java, passing parameters andreturning values as if the external function were a native Maple procedure.System IntegrityThe final section emphasizes that using compiled code truly extends theMaple kernel. The kernel extension must be reliable because it can affectthe entire Maple program.7.1 Code GenerationThe CodeGeneration PackageConversion of Maple code to other programming languages can be performedusing the CodeGeneration package. Currently, translators toANSI C, Fortran 77, and Java are available. You can use the Maple289
290 • Chapter 7: <strong>Advanced</strong> Connectivitysymbolic environment to develop a numeric algorithm, and then translatethis to another language for inclusion in an existing program or forfaster execution. To perform a conversion to C, Fortran, or Java, use theC, Fortran, or Java commands in the CodeGeneration package, or thecontext sensitive menu options in the worksheet environment.Important: You may be familiar with the C and fortran functions inthe codegen package. It is recommended that the newer CodeGenerationpackage be used instead. However, the codegen package also contains anumber of support functions not currently available in the CodeGenerationpackage, which may be used to preprocess the Maple input before translationwith the CodeGeneration functions.Calling CodeGeneration FunctionsCall the CodeGeneration functions using the following syntax, where Lis one of C, Fortran, or Java.CodeGeneration[L]( expression, options )The expression can take one of the following forms:• A single algebraic expression: Maple generates a statement in thetarget language assigning this expression to a variable.• A list of equations having the form name=expression: Maple interpretsthis as a sequence of assignment statements. The equivalentsequence of assignment statements in the target language is generated.• A list, array or rtable: Maple generates a sequence of statements assigningthe elements to an array in the target language. Only theinitialized elements of the rtable or Maple array are translated.• A Maple procedure: Maple generates the equivalent in the target language.If the language is C, a function is generated, along with any necessarydirectives for library inclusion.If the language is Fortran, a function or a subroutine is generated.If the language is Java, a Java class containing a function is produced,along with any necessary import statements.
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ii•Waterloo Maple Inc.57 Erb Stre
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Contents • v3.6 Interfaces and Im
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Contents • viiPlotting Gears . .
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Contents • ixForeign Data . . . .
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1 Introduction1.1 Purpose of This B
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2 Procedures, Variables,and Extendi
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2.1 Nested Procedures • 5procedur
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2.1 Nested Procedures • 7> A[j] :
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2.1 Nested Procedures • 9> quicks
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2.1 Nested Procedures • 11> U :=
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2.2 Procedures That Return Procedur
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2.2 Procedures That Return Procedur
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2.3 Local Variables and Invoking Pr
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assign(another_a = a);> eqn;2.3 Loc
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[ seq( s[j][c[j]], j=1..2 ) ];2.3 L
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2.3 Local Variables and Invoking Pr
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2.4 Interactive Input • 25Improve
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2.4 Interactive Input • 27> reads
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2.5 Extending Maple • 29The parse
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2.5 Extending Maple • 31> ‘type
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2.5 Extending Maple • 33The follo
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2.5 Extending Maple • 3556 IIn th
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2.5 Extending Maple • 37Extending
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2.5 Extending Maple • 39The useri
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3 Programming withModulesProcedures
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• 43> gentemp := proc()> count :=
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3.1 Syntax and Semantics3.1 Syntax
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3.1 Syntax and Semantics • 47name
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3.1 Syntax and Semantics • 49> He
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3.1 Syntax and Semantics • 51mode
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3.1 Syntax and Semantics • 53The
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3.1 Syntax and Semantics • 55true
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3.1 Syntax and Semantics • 57modu
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3.1 Syntax and Semantics • 59> m
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This is achieved by the double assi
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3.1 Syntax and Semantics • 63This
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3.1 Syntax and Semantics • 65With
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3.1 Syntax and Semantics • 67> wh
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SpecFuncs := module()> export F; #
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3.2 Records • 71b> evalb( % = b )
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3.3 Packages • 73Packages in the
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3.3 Packages • 751 −1 + 1 21k x
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3.3 Packages • 77> "new types ‘
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3.3 Packages • 79definition. This
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3.3 Packages • 81true> member( 10
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3.3 Packages • 83The display show
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3.3 Packages • 85> end module:How
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3.3 Packages • 87From the output
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3.3 Packages • 89The final output
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3.3 Packages • 91shape-specific f
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3.3 Packages • 93The area Procedu
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"but got %1", shape> end if;>> # Ex
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3.4 The use Statement • 97> circl
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3.4 The use Statement • 99use sta
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3.4 The use Statement • 101C++),
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3.5 Modeling Objects3.5 Modeling Ob
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3.5 Modeling Objects • 10514 πFo
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3.5 Modeling Objects • 107> nitem
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3.5 Modeling Objects • 109> for i
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3.5 Modeling Objects • 111> lengt
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3.6 Interfaces and Implementations
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(−2790 T 6 − 77814+ 1943715124T
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4 Input and OutputAlthough Maple is
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4.1 A Tutorial Example • 157Openi
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4.1 A Tutorial Example • 159xy :=
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Buffered Files:4.2 File Types and M
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4.3 File Descriptors versus File Na
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f := fopen("testFile.txt",WRITE):>
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4.5 Input Commands • 167iostatus(
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4.5 Input Commands • 169otherwise
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4.5 Input Commands • 171y The nex
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4.5 Input Commands • 173various c
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4.5 Input Commands • 175Example T
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4.6 Output Commands • 177One-Dime
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4.6 Output Commands • 179the appr
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4.6 Output Commands • 181Writing
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4.6 Output Commands • 183z format
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4.6 Output Commands • 185• If n
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4.6 Output Commands • 187> writed
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4.7 Conversion Commands • 189Conv
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4.8 Notes to C Programmers • 191(
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5 Numerical Programmingin MapleFloa
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5.1 The Basics of evalf • 1953.14
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5.2 Hardware Floating-Point Numbers
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iterate(f, df, x0, N);> end proc:Us
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5.3 Floating-Point Models in Maple
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5.3 Floating-Point Models in Maple
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5.4 Extending the evalf Command •
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5.4 Extending the evalf Command •
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5.5 Using the Matlab Package • 21
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6 Programming with MapleGraphicsMap
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6.1 Basic Plot Functions • 217If
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6.2 Programming with Plotting Libra
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6.3 Maple Plotting Data Structures
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PLOT( CURVES( points ) );6.3 Maple
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6.4 Programming with Plot Data Stru
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6.4 Programming with Plot Data Stru
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Table 7.3 Wrapper Compound TypesMap
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AInternal Representationand Manipul
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A.1 Internal Organization • 343wi
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A.2 Internal Representations of Dat
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Type Specification or TestA.2 Inter
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Length: 3 or moreA.2 Internal Repre
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A.3 The Use of Hashing in Maple •
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Index%, 174&, 31accuracy, 193, 195,
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Index • 375SAVE, 362SERIES, 363SE
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Index • 377defining numeric, 210n
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Index • 379name, 357name table, 3
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Index • 381statements, 174strings
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Waterloo Maple Inc.57 Erb Street We
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