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Article contents:== Outdated egg! This is an egg for CHICKEN 4, the unsupported old release. You're almost certainly looking for [[/eggref/5/flsim|the CHICKEN 5 version of this egg]], if it exists. If it does not exist, there may be equivalent functionality provided by another egg; have a look at the [[https://wiki.call-cc.org/chicken-projects/egg-index-5.html|egg index]]. Otherwise, please consider porting this egg to the current version of CHICKEN. [[tags:egg]] == flsim Definition and code generators for a simple applicative language for numerical simulation. [[toc:]] == Usage (require-extension flsim) == Documentation The {{flsim}} library provides definitions for a simple applicative language capable of expressing finite state machines and code generators for Scheme and Standard ML. === Data types {{(define-datatype value value? ...)}} Representation of values in the language. The value definitions are: ; {{(V:C const)}} : Constant values. Currently supported are numeric and symbolic constants. ; {{(V:Var name)}} : Variable name. {{NAME}} must be a symbol. ; {{(V:Rec fields)}} : Record constructor. {{FIELDS}} is a list of elements of the form {{(NAME VALUE)}}. ; {{(V:Sel field value)}} : Record field selector. {{FIELD}} is a field name (symbol), and {{VALUE}} must be a record value. ; {{(V:Vec (value ...))}} : Vector constructor. ; {{(V:Sub index value)}} : Vector element selector. {{INDEX}} must be a positive integer, {{VALUE}} must be a vector value. ; {{(V:Fn args body)}} : Parametric expression. {{ARGS}} must be a list of symbols, {{BODY}} must be an expression (see below for definition). ; {{(V:Prim name args)}} : Primitive procedure application. {{NAME}} must be a symbol, {{ARGS}} must be a list of values. ; {{(V:Ifv test iftrue iffalse)}} : Conditional value. {{(define-datatype expr expr? ...)}} Representation of expressions in the language. The expression definitions are: ; {{(E:Val name value)}} : Creates a binding that associates the given name with the given value ; {{(E:Ife test iftrue iffalse)}} : Conditional expression. ; {{(E:Let bindings body)}} : An expression with bindings. ; {{(E:Ret value)}} : Returns the given value. ; {{(E:Noop)}} : Null expression. === Language constants The language defined in this library assumes the presence in the host language of the standard ANSI C floating-point arithmetic and mathematical functions. === Procedures ==== Scheme code generator <procedure>name/scheme :: NAME -> NAME</procedure> Converts a given name (symbol) to a valid Scheme identifier. <procedure>prelude/scheme :: VOID -> FRAGMENTS</procedure> Returns a set of definitions needed by the Scheme code generator. {{FRAGMENTS}} is a list of strings, symbols, or fragments. <procedure>expr->scheme :: EXPRESSION -> FRAGMENTS </procedure> Generates a representation of the given expression in Scheme. <procedure>value->scheme :: VALUE -> FRAGMENTS </procedure> Generates a representation of the given value in Scheme. ==== ML code generator <procedure>name/ML :: NAME -> NAME </procedure> Converts a given name (symbol) to a valid Standard ML identifier. <procedure>prelude/ML :: VOID -> FRAGMENTS</procedure> Returns a set of definitions needed by the Standard ML code generator. {{FRAGMENTS}} is a list of strings, symbols, or fragments. <procedure>expr->ML :: EXPRESSION -> FRAGMENTS </procedure> Generates a representation of the given value in Standard ML. <procedure>value->ML :: VALUE -> FRAGMENTS </procedure> Generates a representation of the given value in Standard ML. ==== Octave code generator <procedure>name/Octave :: NAME -> NAME </procedure> Converts a given name (symbol) to a valid Octave identifier. <procedure>prelude/Octave :: VOID -> FRAGMENTS</procedure> Returns a set of definitions needed by the Octave code generator. {{FRAGMENTS}} is a list of strings, symbols, or fragments. <procedure>expr->Octave :: EXPRESSION -> FRAGMENTS </procedure> Generates a representation of the given value in Octave. <procedure>value->Octave :: VALUE -> FRAGMENTS </procedure> Generates a representation of the given value in Octave. == About this egg === Author [[/users/ivan-raikov|Ivan Raikov]] === Version history ; 2.4 : Bug fixes in SUNDIALS support ; 2.3 : Using make egg instead of setup-api for make macro ; 2.1 : Better support for LSODE solver in Octave ; 2.0 : Removed pointer operations (Ldv/Stv/Set) and Seq ; 1.7 : Fixes and extensions to the Octave code generator ; 1.6 : Changes in the integrator interface ; 1.5 : Install RK library files in Chicken shared directory ; 1.4 : Bug fixes in the Octave code generator ; 1.1 : Initial code generator for Octave; some streamlining of the integrator interface ; 1.0 : Initial release === License Copyright 2010-2012 Ivan Raikov. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. A full copy of the GPL license can be found at <http://www.gnu.org/licenses/>. Description of your changes:

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