/usr/share/doc/axiom-doc/hypertex/numfloat.xhtml is in axiom-hypertex-data 20120501-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | <?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:m="http://www.w3.org/1998/Math/MathML">
<head>
<meta http-equiv="Content-Type" content="text/html" charset="us-ascii"/>
<title>Axiom Documentation</title>
<style>
html {
background-color: #ECEA81;
}
body {
margin: 0px;
padding: 0px;
}
div.command {
color:red;
}
div.center {
color:blue;
}
div.reset {
visibility:hidden;
}
div.mathml {
color:blue;
}
input.subbut {
background-color:#ECEA81;
border: 0;
color:green;
font-family: "Courier New", Courier, monospace;
}
input.noresult {
background-color:#ECEA81;
border: 0;
color:black;
font-family: "Courier New", Courier, monospace;
}
span.cmd {
color:green;
font-family: "Courier New", Courier, monospace;
}
pre {
font-family: "Courier New", Courier, monospace;
}
</style>
</head>
<body>
<div align="center"><img align="middle" src="doctitle.png"/></div>
<hr/>
<div align="center">Real Numbers</div>
<hr/>
Axiom provides two kinds of floating point numbers. The domain
<a href="db.xhtml?Float">Float</a>
(abbreviation <a href="db.xhtml?Float">FLOAT</a>)
implements a model of arbitrary precisions floating point numbers. The
domain
<a href="db.xhtml?DoubleFloat">DoubleFloat</a>
(abbreviation <a href="db.xhtml?DoubleFloat">DFLOAT</a>)
is intended to make available hardware floating point arithmetic in Axiom.
The actual model of floating point
<a href="db.xhtml?DoubleFloat">DoubleFloat</a> that Axiom
provides is system dependent. For example, on the IBM System 370, Axiom
uses IBM double precision which has fourteen hexadecimal digits of
precision or roughly sixteen decimal digits. Arbitrary precision floats
allow the user to specify the precision at which arithmetic operations
are computed. Although this is an attractive facility, it comes at a cost.
Arbitrary precision floating point arithmetic typically takes twenty to
two hundred times more time than hardware floating point.
For more information about Axiom's numeric and graphic facilities
see <a href="axbook/book-contents.xhtml#chapter7">Graphics</a> in section 7,
<a href="axbook/book-contents.xhtml#chapter8">Numeric Functions</a>
in section 8.1, and <a href="nummachinefloats.xhtml">DoubleFloat</a>
<ul>
<li>
<a href="introtofloat.xhtml">Introduction to Float</a> (see
<a href="axbook/section-9.27.xhtml#subsec-9.27.1">
Jenks section 9.27.1
</a>)
</li>
<li>
<a href="conversionfunctions.xhtml">Conversion Functions</a> (see
<a href="axbook/section-9.27.xhtml#subsec-9.27.2">
Jenks section 9.27.2
</a>)
</li>
<li>
<a href="outputfunctions.xhtml">Output Functions</a> (see
<a href="axbook/section-9.27.xhtml#subsec-9.27.3">
Jenks, section 9.27.3
</a>)
</li>
<li>
<a href="determinantofhilbert.xhtml">
An Example: Determinant of a Hilbert Matrix</a> (see
<a href="axbook/section-9.27.xhtml#subsec-9.27.4">
Jenks, section 9.27.4
</a>)
</li>
</ul>
</body>
</html>
|