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| | 22 | <a href="./Home">MLton 20180207</a>\r |
| | 23 | </div>\r |
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| | 25 | <div id="header">\r |
| | 26 | <h1>MLtonIntInf</h1>\r |
| | 27 | </div>\r |
| | 28 | <div id="content">\r |
| | 29 | <div id="preamble">\r |
| | 30 | <div class="sectionbody">\r |
| | 31 | <div class="listingblock">\r |
| | 32 | <div class="content"><div class="highlight"><pre><span class="k">signature</span><span class="w"> </span><span class="n">MLTON_INT_INF</span><span class="w"> </span><span class="p">=</span><span class="w"></span>\r |
| | 33 | <span class="w"> </span><span class="k">sig</span><span class="w"></span>\r |
| | 34 | <span class="w"> </span><span class="k">type</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">=</span><span class="w"> </span><span class="n">IntInf</span><span class="p">.</span><span class="n">int</span><span class="w"></span>\r |
| | 35 | \r |
| | 36 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">areSmall</span><span class="p">:</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">*</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">bool</span><span class="w"></span>\r |
| | 37 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">gcd</span><span class="p">:</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">*</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">t</span><span class="w"></span>\r |
| | 38 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">isSmall</span><span class="p">:</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">bool</span><span class="w"></span>\r |
| | 39 | \r |
| | 40 | <span class="w"> </span><span class="k">structure</span><span class="w"> </span><span class="n">BigWord</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">WORD</span><span class="w"></span>\r |
| | 41 | <span class="w"> </span><span class="k">structure</span><span class="w"> </span><span class="n">SmallInt</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">INTEGER</span><span class="w"></span>\r |
| | 42 | <span class="w"> </span><span class="k">datatype</span><span class="w"> </span><span class="n">rep</span><span class="w"> </span><span class="p">=</span><span class="w"></span>\r |
| | 43 | <span class="w"> </span><span class="n">Big</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="n">BigWord</span><span class="p">.</span><span class="n">word</span><span class="w"> </span><span class="n">vector</span><span class="w"></span>\r |
| | 44 | <span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="n">Small</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="n">SmallInt</span><span class="p">.</span><span class="n">int</span><span class="w"></span>\r |
| | 45 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">rep</span><span class="p">:</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">rep</span><span class="w"></span>\r |
| | 46 | <span class="w"> </span><span class="k">val</span><span class="w"> </span><span class="n">fromRep</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">rep</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="n">option</span><span class="w"></span>\r |
| | 47 | <span class="w"> </span><span class="k">end</span><span class="w"></span>\r |
| | 48 | </pre></div></div></div>\r |
| | 49 | <div class="paragraph"><p>MLton represents an arbitrary precision integer either as an unboxed\r |
| | 50 | word with the bottom bit set to 1 and the top bits representing a\r |
| | 51 | small signed integer, or as a pointer to a vector of words, where the\r |
| | 52 | first word indicates the sign and the rest are the limbs of a\r |
| | 53 | <a href="GnuMP">GnuMP</a> big integer.</p></div>\r |
| | 54 | <div class="ulist"><ul>\r |
| | 55 | <li>\r |
| | 56 | <p>\r |
| | 57 | <span class="monospaced">type t</span>\r |
| | 58 | </p>\r |
| | 59 | <div class="paragraph"><p>the same as type <span class="monospaced">IntInf.int</span>.</p></div>\r |
| | 60 | </li>\r |
| | 61 | <li>\r |
| | 62 | <p>\r |
| | 63 | <span class="monospaced">areSmall (a, b)</span>\r |
| | 64 | </p>\r |
| | 65 | <div class="paragraph"><p>returns true iff both <span class="monospaced">a</span> and <span class="monospaced">b</span> are small.</p></div>\r |
| | 66 | </li>\r |
| | 67 | <li>\r |
| | 68 | <p>\r |
| | 69 | <span class="monospaced">gcd (a, b)</span>\r |
| | 70 | </p>\r |
| | 71 | <div class="paragraph"><p>uses the <a href="GnuMP">GnuMP’s</a> fast gcd implementation.</p></div>\r |
| | 72 | </li>\r |
| | 73 | <li>\r |
| | 74 | <p>\r |
| | 75 | <span class="monospaced">isSmall a</span>\r |
| | 76 | </p>\r |
| | 77 | <div class="paragraph"><p>returns true iff <span class="monospaced">a</span> is small.</p></div>\r |
| | 78 | </li>\r |
| | 79 | <li>\r |
| | 80 | <p>\r |
| | 81 | <span class="monospaced">BigWord : WORD</span>\r |
| | 82 | </p>\r |
| | 83 | <div class="paragraph"><p>representation of a big <span class="monospaced">IntInf.int</span> as a vector of words; on 32-bit\r |
| | 84 | platforms, <span class="monospaced">BigWord</span> is likely to be equivalent to <span class="monospaced">Word32</span>, and on\r |
| | 85 | 64-bit platforms, <span class="monospaced">BigWord</span> is likely to be equivalent to <span class="monospaced">Word64</span>.</p></div>\r |
| | 86 | </li>\r |
| | 87 | <li>\r |
| | 88 | <p>\r |
| | 89 | <span class="monospaced">SmallInt : INTEGER</span>\r |
| | 90 | </p>\r |
| | 91 | <div class="paragraph"><p>representation of a small <span class="monospaced">IntInf.int</span> as a signed integer; on 32-bit\r |
| | 92 | platforms, <span class="monospaced">SmallInt</span> is likely to be equivalent to <span class="monospaced">Int32</span>, and on\r |
| | 93 | 64-bit platforms, <span class="monospaced">SmallInt</span> is likely to be equivalent to <span class="monospaced">Int64</span>.</p></div>\r |
| | 94 | </li>\r |
| | 95 | <li>\r |
| | 96 | <p>\r |
| | 97 | <span class="monospaced">datatype rep</span>\r |
| | 98 | </p>\r |
| | 99 | <div class="paragraph"><p>the underlying representation of an <span class="monospaced">IntInf.int</span>.</p></div>\r |
| | 100 | </li>\r |
| | 101 | <li>\r |
| | 102 | <p>\r |
| | 103 | <span class="monospaced">rep i</span>\r |
| | 104 | </p>\r |
| | 105 | <div class="paragraph"><p>returns the underlying representation of <span class="monospaced">i</span>.</p></div>\r |
| | 106 | </li>\r |
| | 107 | <li>\r |
| | 108 | <p>\r |
| | 109 | <span class="monospaced">fromRep r</span>\r |
| | 110 | </p>\r |
| | 111 | <div class="paragraph"><p>converts from the underlying representation back to an <span class="monospaced">IntInf.int</span>.\r |
| | 112 | If <span class="monospaced">fromRep r</span> is given anything besides the valid result of <span class="monospaced">rep i</span>\r |
| | 113 | for some <span class="monospaced">i</span>, this function call will return <span class="monospaced">NONE</span>.</p></div>\r |
| | 114 | </li>\r |
| | 115 | </ul></div>\r |
| | 116 | </div>\r |
| | 117 | </div>\r |
| | 118 | </div>\r |
| | 119 | <div id="footnotes"><hr></div>\r |
| | 120 | <div id="footer">\r |
| | 121 | <div id="footer-text">\r |
| | 122 | </div>\r |
| | 123 | <div id="footer-badges">\r |
| | 124 | </div>\r |
| | 125 | </div>\r |
| | 126 | </body>\r |
| | 127 | </html>\r |
HCoop / hcoop / debian / mlton.git / blame_incremental