Help/Math/Float.html

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  22 <p class="p1"><span class="s1"><b>Float<span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>floating point number</b></p>
  23 <p class="p2"><br></p>
  24 <p class="p1"><b>superclass: </b><a href="SimpleNumber.html"><span class="s2">SimpleNumber</span></a></p>
  25 <p class="p2"><br></p>
  26 <p class="p1">A 64 bit double precision floating point number. Float inherits most of its behaviour from its superclass.</p>
  27 <p class="p2"><br></p>
  28 <p class="p2"><br></p>
  29 <p class="p1"><b>*from32Bits(word)</b></p>
  30 <p class="p2"><br></p>
  31 <p class="p1">Answer a new Float from a 32 bit word.</p>
  32 <p class="p2"><br></p>
  33 <p class="p1"><b>*from64Bits(word)</b></p>
  34 <p class="p2"><br></p>
  35 <p class="p1">Answer a new Float from a 64 bit word.</p>
  36 <p class="p2"><br></p>
  37 <p class="p2"><br></p>
  38 <p class="p2"><br></p>
  39 <p class="p3"><b>Instance Methods</b></p>
  40 <p class="p2"><br></p>
  41 <p class="p1"><b>do(function)</b></p>
  42 <p class="p1">iterates function from 0 to this-1. See also: <a href="../Core/Kernel/Function.html"><span class="s2">Function</span></a>, <a href="Integer.html"><span class="s2">Integer</span></a>, <a href="../Collections/Collection.html"><span class="s2">Collection</span></a></p>
  43 <p class="p2"><br></p>
  44 <p class="p1"><b>reverseDo(function)</b></p>
  45 <p class="p1">iterates function from this-1 to 0</p>
  46 <p class="p2"><br></p>
  47 <p class="p1"><b>coin</b></p>
  48 <p class="p2"><br></p>
  49 <p class="p1">Answers a Boolean which is the result of a random test whose probability of success in a range from<span class="Apple-converted-space"> </span></p>
  50 <p class="p1">zero to one is this. See also: <a href="../Other Topics/Randomness.html"><span class="s2">Randomness</span></a></p>
  51 <p class="p2"><br></p>
  52 <p class="p4"><span class="s3">0.2.coin; </span>// 20 % chance for true.</p>
  53 <p class="p2"><br></p>
  54 <p class="p1"><b>isFloat</b></p>
  55 <p class="p2"><br></p>
  56 <p class="p1">Answer true since this is a Float.</p>
  57 <p class="p2"><br></p>
  58 <p class="p1"><b>asFloat</b></p>
  59 <p class="p2"><br></p>
  60 <p class="p1">Answer this since this is a Float.</p>
  61 <p class="p2"><br></p>
  62 <p class="p1"><b>as32Bits</b></p>
  63 <p class="p2"><br></p>
  64 <p class="p1">Answer an Integer which is the bit pattern of this as a 32bit single precision float</p>
  65 <p class="p2"><br></p>
  66 <p class="p1"><b>high32Bits</b></p>
  67 <p class="p2"><br></p>
  68 <p class="p1">Answer an Integer which is the bit pattern of high 32 bits of the 64 bit double precision floating point value</p>
  69 <p class="p2"><br></p>
  70 <p class="p1"><b>low32Bits</b></p>
  71 <p class="p2"><br></p>
  72 <p class="p1">Answer an Integer which is the bit pattern of high 32 bits of the 64 bit double precision floating point value</p>
  73 <p class="p2"><br></p>
  74 <p class="p1"><b>asStringPrec(precision)</b></p>
  75 <p class="p2"><br></p>
  76 <p class="p1">Returns a string representation of the number, with the desired precision (i.e. number of significant figures).</p>
  77 <p class="p2"><br></p>
  78 <p class="p4">// example:</p>
  79 <p class="p5">pi</p>
  80 <p class="p5">pi.asStringPrec(3)</p>
  81 <p class="p5">pi.asStringPrec(6)</p>
  82 <p class="p5">(pi * 0.0001).asStringPrec(3)</p>
  83 <p class="p5">7.4.asStringPrec(5)</p>
  84 <p class="p5">7.4.asStringPrec(50)</p>
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