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<title>Data/Double/Conversion/FFI.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, ForeignFunctionInterface, MagicHash, UnliftedFFITypes #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Data.Double.Conversion.FFI</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2011 MailRank, Inc.</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : GHC</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- FFI interface support for converting between double precision</span>
<a name="line-13"></a><span class='hs-comment'>-- floating point values and text.</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Double</span><span class='hs-varop'>.</span><span class='hs-conid'>Conversion</span><span class='hs-varop'>.</span><span class='hs-conid'>FFI</span>
<a name="line-16"></a> <span class='hs-layout'>(</span>
<a name="line-17"></a> <span class='hs-varid'>c_Text_ToExponential</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_Text_ToFixed</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_Text_ToPrecision</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_Text_ToShortest</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToExponentialLength</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToFixedLength</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToPrecisionLength</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToShortestLength</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToExponential</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToFixed</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToPrecision</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>c_ToShortest</span>
<a name="line-29"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 703</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CDouble</span><span class='hs-layout'>(</span><span class='hs-conid'>CDouble</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-cpp'>#else</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CDouble</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-36"></a><span class='hs-cpp'>#endif</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span><span class='hs-layout'>)</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span> <span class='hs-layout'>(</span><span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToShortestLength"</span>
<a name="line-41"></a> <span class='hs-varid'>c_ToShortestLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_Text_ToShortest"</span>
<a name="line-44"></a> <span class='hs-varid'>c_Text_ToShortest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToShortest"</span>
<a name="line-47"></a> <span class='hs-varid'>c_ToShortest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToFixedLength"</span>
<a name="line-50"></a> <span class='hs-varid'>c_ToFixedLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_Text_ToFixed"</span>
<a name="line-53"></a> <span class='hs-varid'>c_Text_ToFixed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToFixed"</span>
<a name="line-56"></a> <span class='hs-varid'>c_ToFixed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToExponentialLength"</span>
<a name="line-59"></a> <span class='hs-varid'>c_ToExponentialLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span>
<a name="line-60"></a>
<a name="line-61"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_Text_ToExponential"</span>
<a name="line-62"></a> <span class='hs-varid'>c_Text_ToExponential</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-63"></a>
<a name="line-64"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToExponential"</span>
<a name="line-65"></a> <span class='hs-varid'>c_ToExponential</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-66"></a>
<a name="line-67"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToPrecisionLength"</span>
<a name="line-68"></a> <span class='hs-varid'>c_ToPrecisionLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_Text_ToPrecision"</span>
<a name="line-71"></a> <span class='hs-varid'>c_Text_ToPrecision</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-72"></a>
<a name="line-73"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"hs-double-conversion.h _hs_ToPrecision"</span>
<a name="line-74"></a> <span class='hs-varid'>c_ToPrecision</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
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