<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>src/ForSyDe/Shallow/SynchronousProcessLib.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>-- |</span> <a name="line-3"></a><span class='hs-comment'>-- Module : ForSyDe.Shallow.SynchronousProcessLib</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) SAM Group, KTH/ICT/ECS 2007-2008</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>-- </span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : forsyde-dev@ict.kth.se</span> <a name="line-8"></a><span class='hs-comment'>-- Stability : experimental</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- The synchronous process library defines processes for the</span> <a name="line-12"></a><span class='hs-comment'>-- synchronous computational model. It is based on the synchronous</span> <a name="line-13"></a><span class='hs-comment'>-- library "ForSyDe.Shallow.SynchronousLib".</span> <a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shallow</span><span class='hs-varop'>.</span><span class='hs-conid'>SynchronousProcessLib</span><span class='hs-layout'>(</span> <a name="line-16"></a> <span class='hs-varid'>fifoDelaySY</span><span class='hs-layout'>,</span> <span class='hs-varid'>finiteFifoDelaySY</span><span class='hs-layout'>,</span> <a name="line-17"></a> <span class='hs-varid'>memorySY</span><span class='hs-layout'>,</span> <span class='hs-varid'>mergeSY</span><span class='hs-layout'>,</span> <span class='hs-varid'>groupSY</span><span class='hs-layout'>,</span> <span class='hs-varid'>counterSY</span> <a name="line-18"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-19"></a> <a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shallow</span><span class='hs-varop'>.</span><span class='hs-conid'>SynchronousLib</span> <a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shallow</span><span class='hs-varop'>.</span><span class='hs-conid'>CoreLib</span> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shallow</span><span class='hs-varop'>.</span><span class='hs-conid'>Queue</span> <a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shallow</span><span class='hs-varop'>.</span><span class='hs-conid'>Memory</span> <a name="line-24"></a> <a name="line-25"></a><a name="fifoDelaySY"></a><span class='hs-comment'>-- | The process 'fifoDelaySY' implements a synchronous model of a</span> <a name="line-26"></a><span class='hs-comment'>-- FIFO with infinite size. The FIFOs take a list of values at each</span> <a name="line-27"></a><span class='hs-comment'>-- event cycle and output one value. There is a delay of one cycle.</span> <a name="line-28"></a><span class='hs-definition'>fifoDelaySY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Signal</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-29"></a> <a name="line-30"></a><a name="finiteFifoDelaySY"></a><span class='hs-comment'>-- | The process 'finiteFifoDelaySY' implements a FIFO with finite</span> <a name="line-31"></a><span class='hs-comment'>-- size. The FIFOs take a list of values at each event cycle and</span> <a name="line-32"></a><span class='hs-comment'>-- output one value. There is a delay of one cycle.</span> <a name="line-33"></a><span class='hs-definition'>finiteFifoDelaySY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-34"></a> <a name="line-35"></a><a name="memorySY"></a><span class='hs-comment'>-- | The process 'memorySY' implements a synchronous memory. It uses</span> <a name="line-36"></a><span class='hs-comment'>-- access functions of the type 'Read adr' and 'Write adr value'.</span> <a name="line-37"></a><span class='hs-definition'>memorySY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>Access</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-38"></a> <a name="line-39"></a><a name="mergeSY"></a><span class='hs-comment'>-- | The process 'mergeSY' merges two input signals into a single</span> <a name="line-40"></a><span class='hs-comment'>-- signal. The process has an internal buffer in order to prevent loss</span> <a name="line-41"></a><span class='hs-comment'>-- of data. The process is deterministic and outputs events according</span> <a name="line-42"></a><span class='hs-comment'>-- to their time tag. If there are two valid values at on both</span> <a name="line-43"></a><span class='hs-comment'>-- signals. The value of the first signal is output first.</span> <a name="line-44"></a><span class='hs-definition'>mergeSY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-45"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-46"></a> <a name="line-47"></a><a name="counterSY"></a><span class='hs-comment'>-- | The process 'counterSY' implements a counter, that counts from</span> <a name="line-48"></a><span class='hs-comment'>-- min to max. The process 'counterSY' has no input and its output is</span> <a name="line-49"></a><span class='hs-comment'>-- an infinite signal.</span> <a name="line-50"></a><span class='hs-definition'>counterSY</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Enum</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span> <a name="line-51"></a> <a name="line-52"></a><a name="groupSY"></a><span class='hs-comment'>-- | The function 'groupSY' groups values into a vector of size n,</span> <a name="line-53"></a><span class='hs-comment'>-- which takes n cycles. While the grouping takes place the output</span> <a name="line-54"></a><span class='hs-comment'>-- from this process consists of absent values.</span> <a name="line-55"></a><span class='hs-definition'>groupSY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-conid'>AbstExt</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-56"></a> <a name="line-57"></a><span class='hs-definition'>fifoDelaySY</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mooreSY</span> <span class='hs-varid'>fifoState</span> <span class='hs-varid'>fifoOutput</span> <span class='hs-layout'>(</span><span class='hs-varid'>queue</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <a name="line-58"></a> <a name="line-59"></a><a name="fifoState"></a><span class='hs-definition'>fifoState</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Queue</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Queue</span> <span class='hs-varid'>a</span> <a name="line-60"></a><span class='hs-definition'>fifoState</span> <span class='hs-layout'>(</span><span class='hs-conid'>Q</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Q</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <a name="line-61"></a><span class='hs-definition'>fifoState</span> <span class='hs-varid'>q</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>popQ</span> <span class='hs-layout'>(</span><span class='hs-varid'>pushListQ</span> <span class='hs-varid'>q</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-62"></a> <a name="line-63"></a><a name="fifoOutput"></a><span class='hs-definition'>fifoOutput</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Queue</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span> <a name="line-64"></a><span class='hs-definition'>fifoOutput</span> <span class='hs-layout'>(</span><span class='hs-conid'>Q</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Abst</span> <a name="line-65"></a><span class='hs-definition'>fifoOutput</span> <span class='hs-layout'>(</span><span class='hs-conid'>Q</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span> <a name="line-66"></a> <a name="line-67"></a><span class='hs-definition'>finiteFifoDelaySY</span> <span class='hs-varid'>n</span> <span class='hs-varid'>xs</span> <a name="line-68"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mooreSY</span> <span class='hs-varid'>fifoStateFQ</span> <span class='hs-varid'>fifoOutputFQ</span> <span class='hs-layout'>(</span><span class='hs-varid'>finiteQueue</span> <span class='hs-varid'>n</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <a name="line-69"></a> <a name="line-70"></a><a name="fifoStateFQ"></a><span class='hs-definition'>fifoStateFQ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FiniteQueue</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FiniteQueue</span> <span class='hs-varid'>a</span> <a name="line-71"></a><span class='hs-definition'>fifoStateFQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>FQ</span> <span class='hs-varid'>n</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>FQ</span> <span class='hs-varid'>n</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <a name="line-72"></a><span class='hs-definition'>fifoStateFQ</span> <span class='hs-varid'>q</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>popFQ</span> <span class='hs-layout'>(</span><span class='hs-varid'>pushListFQ</span> <span class='hs-varid'>q</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-73"></a> <a name="line-74"></a><a name="fifoOutputFQ"></a><span class='hs-definition'>fifoOutputFQ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FiniteQueue</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AbstExt</span> <span class='hs-varid'>a</span> <a name="line-75"></a><span class='hs-definition'>fifoOutputFQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>FQ</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Abst</span> <a name="line-76"></a><span class='hs-definition'>fifoOutputFQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>FQ</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span> <a name="line-77"></a> <a name="line-78"></a><span class='hs-definition'>memorySY</span> <span class='hs-varid'>size</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mealySY</span> <span class='hs-varid'>ns</span> <span class='hs-varid'>o</span> <span class='hs-layout'>(</span><span class='hs-varid'>newMem</span> <span class='hs-varid'>size</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <a name="line-79"></a> <span class='hs-keyword'>where</span> <a name="line-80"></a> <span class='hs-varid'>ns</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memState</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-81"></a> <span class='hs-varid'>ns</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Write</span> <span class='hs-varid'>x</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memState</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Write</span> <span class='hs-varid'>x</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <a name="line-82"></a> <span class='hs-varid'>o</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memOutput</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Read</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-83"></a> <span class='hs-varid'>o</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Write</span> <span class='hs-varid'>x</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>memOutput</span> <span class='hs-varid'>mem</span> <span class='hs-layout'>(</span><span class='hs-conid'>Write</span> <span class='hs-varid'>x</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <a name="line-84"></a> <a name="line-85"></a> <a name="line-86"></a><span class='hs-definition'>mergeSY</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>moore2SY</span> <span class='hs-varid'>mergeState</span> <span class='hs-varid'>mergeOutput</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <a name="line-87"></a> <span class='hs-keyword'>where</span> <a name="line-88"></a> <span class='hs-varid'>mergeState</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>Abst</span> <span class='hs-conid'>Abst</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-89"></a> <span class='hs-varid'>mergeState</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>Abst</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <a name="line-90"></a> <span class='hs-varid'>mergeState</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conid'>Abst</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <a name="line-91"></a> <span class='hs-varid'>mergeState</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <a name="line-92"></a> <span class='hs-varid'>mergeState</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>us</span><span class='hs-layout'>)</span> <span class='hs-conid'>Abst</span> <span class='hs-conid'>Abst</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>us</span> <a name="line-93"></a> <span class='hs-varid'>mergeState</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>us</span><span class='hs-layout'>)</span> <span class='hs-conid'>Abst</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>us</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <a name="line-94"></a> <span class='hs-varid'>mergeState</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>us</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conid'>Abst</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>us</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <a name="line-95"></a> <span class='hs-varid'>mergeState</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>us</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prst</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>us</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span> <a name="line-96"></a> <a name="line-97"></a> <span class='hs-varid'>mergeOutput</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Abst</span> <a name="line-98"></a> <span class='hs-varid'>mergeOutput</span> <span class='hs-layout'>(</span><span class='hs-varid'>u</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prst</span> <span class='hs-varid'>u</span> <a name="line-99"></a> <a name="line-100"></a><span class='hs-definition'>groupSY</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mealySY</span> <span class='hs-varid'>f</span> <span class='hs-varid'>g</span> <span class='hs-varid'>s0</span> <a name="line-101"></a> <span class='hs-keyword'>where</span> <a name="line-102"></a> <span class='hs-varid'>s0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NullV</span> <a name="line-103"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthV</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unitV</span> <span class='hs-varid'>x</span> <a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthV</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unitV</span> <span class='hs-varid'>x</span> <a name="line-105"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>v</span> <span class='hs-varop'><:</span> <span class='hs-varid'>x</span> <a name="line-106"></a> <span class='hs-varid'>g</span> <span class='hs-varid'>v</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthV</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Abst</span> <a name="line-107"></a> <span class='hs-varid'>g</span> <span class='hs-varid'>v</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthV</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-varid'>k</span><span class='hs-comment'>-</span><span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prst</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span><span class='hs-varop'><:</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-108"></a> <span class='hs-varid'>g</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Abst</span> <a name="line-109"></a> <a name="line-110"></a><span class='hs-definition'>counterSY</span> <span class='hs-varid'>m</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sourceSY</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <a name="line-111"></a> <span class='hs-keyword'>where</span> <a name="line-112"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <a name="line-113"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>x</span> <a name="line-114"></a> <a name="line-115"></a> </pre></body> </html>
distrib
>
Fedora
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14
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x86_64
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media
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updates
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by-pkgid
>
a47f0719970f9f829128f311a437816d
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files
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351
