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<title>Data/Text/Lazy/Builder/RealFloat/Functions.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- |</span>
<a name="line-2"></a><span class='hs-comment'>-- Module:    Data.Text.Lazy.Builder.RealFloat.Functions</span>
<a name="line-3"></a><span class='hs-comment'>-- Copyright: (c) The University of Glasgow 1994-2002</span>
<a name="line-4"></a><span class='hs-comment'>-- License:   see libraries/base/LICENSE</span>
<a name="line-5"></a>
<a name="line-6"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span><span class='hs-varop'>.</span><span class='hs-conid'>RealFloat</span><span class='hs-varop'>.</span><span class='hs-conid'>Functions</span>
<a name="line-7"></a>    <span class='hs-layout'>(</span>
<a name="line-8"></a>      <span class='hs-varid'>roundTo</span>
<a name="line-9"></a>    <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-10"></a>
<a name="line-11"></a><a name="roundTo"></a><span class='hs-definition'>roundTo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-12"></a><span class='hs-definition'>roundTo</span> <span class='hs-varid'>d</span> <span class='hs-varid'>is</span> <span class='hs-keyglyph'>=</span>
<a name="line-13"></a>  <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>d</span> <span class='hs-varid'>is</span> <span class='hs-keyword'>of</span>
<a name="line-14"></a>    <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>x</span>
<a name="line-15"></a>    <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>  <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-16"></a>    <span class='hs-keyword'>_</span>       <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>error</span> <span class='hs-str'>"roundTo: bad Value"</span>
<a name="line-17"></a> <span class='hs-keyword'>where</span>
<a name="line-18"></a>  <span class='hs-varid'>f</span> <span class='hs-varid'>n</span> <span class='hs-conid'>[]</span>     <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>n</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-19"></a>  <span class='hs-varid'>f</span> <span class='hs-num'>0</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-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-varop'>&gt;=</span> <span class='hs-num'>5</span> <span class='hs-keyword'>then</span> <span class='hs-num'>1</span> <span class='hs-keyword'>else</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-20"></a>  <span class='hs-varid'>f</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-21"></a>     <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i'</span> <span class='hs-varop'>==</span> <span class='hs-num'>10</span>  <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-conop'>:</span><span class='hs-varid'>ds</span><span class='hs-layout'>)</span>
<a name="line-22"></a>     <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-varid'>i'</span><span class='hs-conop'>:</span><span class='hs-varid'>ds</span><span class='hs-layout'>)</span>
<a name="line-23"></a>      <span class='hs-keyword'>where</span>
<a name="line-24"></a>       <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-25"></a>       <span class='hs-varid'>i'</span>     <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-varop'>+</span> <span class='hs-varid'>i</span>
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