mpfr-binary-predicates.html 4.4 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798
  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd">
  2. <html>
  3. <!-- Created on November 8, 2012 by texi2html 1.82
  4. texi2html was written by:
  5. Lionel Cons <[email protected]> (original author)
  6. Karl Berry <[email protected]>
  7. Olaf Bachmann <[email protected]>
  8. and many others.
  9. Maintained by: Many creative people.
  10. Send bugs and suggestions to <[email protected]>
  11. -->
  12. <head>
  13. <title>avram - a virtual machine code interpreter: D.14.4 mpfr binary predicates</title>
  14. <meta name="description" content="avram - a virtual machine code interpreter: D.14.4 mpfr binary predicates">
  15. <meta name="keywords" content="avram - a virtual machine code interpreter: D.14.4 mpfr binary predicates">
  16. <meta name="resource-type" content="document">
  17. <meta name="distribution" content="global">
  18. <meta name="Generator" content="texi2html 1.82">
  19. <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  20. <style type="text/css">
  21. <!--
  22. a.summary-letter {text-decoration: none}
  23. blockquote.smallquotation {font-size: smaller}
  24. pre.display {font-family: serif}
  25. pre.format {font-family: serif}
  26. pre.menu-comment {font-family: serif}
  27. pre.menu-preformatted {font-family: serif}
  28. pre.smalldisplay {font-family: serif; font-size: smaller}
  29. pre.smallexample {font-size: smaller}
  30. pre.smallformat {font-family: serif; font-size: smaller}
  31. pre.smalllisp {font-size: smaller}
  32. span.roman {font-family:serif; font-weight:normal;}
  33. span.sansserif {font-family:sans-serif; font-weight:normal;}
  34. ul.toc {list-style: none}
  35. -->
  36. </style>
  37. </head>
  38. <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
  39. <a name="mpfr-binary-predicates"></a>
  40. <table cellpadding="1" cellspacing="1" border="0">
  41. <tr><td valign="middle" align="left">[<a href="mpfr-binary-operators-with-a-natural-operand.html#mpfr-binary-operators-with-a-natural-operand" title="Previous section in reading order"> &lt; </a>]</td>
  42. <td valign="middle" align="left">[<a href="mpfr-unary-predicates.html#mpfr-unary-predicates" title="Next section in reading order"> &gt; </a>]</td>
  43. <td valign="middle" align="left"> &nbsp; </td>
  44. <td valign="middle" align="left">[<a href="External-Libraries.html#External-Libraries" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
  45. <td valign="middle" align="left">[<a href="mpfr.html#mpfr" title="Up section"> Up </a>]</td>
  46. <td valign="middle" align="left">[<a href="Copying.html#Copying" title="Next chapter"> &gt;&gt; </a>]</td>
  47. <td valign="middle" align="left"> &nbsp; </td>
  48. <td valign="middle" align="left"> &nbsp; </td>
  49. <td valign="middle" align="left"> &nbsp; </td>
  50. <td valign="middle" align="left"> &nbsp; </td>
  51. <td valign="middle" align="left">[<a href="avram.html#Top" title="Cover (top) of document">Top</a>]</td>
  52. <td valign="middle" align="left">[<a href="avram_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
  53. <td valign="middle" align="left">[<a href="Function-Index.html#Function-Index" title="Index">Index</a>]</td>
  54. <td valign="middle" align="left">[<a href="avram_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
  55. </tr></table>
  56. <hr size="1">
  57. <a name="mpfr-binary-predicates-1"></a>
  58. <h3 class="subsection">D.14.4 <code>mpfr</code> binary predicates</h3>
  59. <p>These predicates take a pair of <code>mpfr</code> numbers
  60. <code>(<var>x</var>,<var>y</var>)</code> as arguments and perform a logical operation.
  61. If the result is true, they return <code>(nil,nil)</code>, and if it&rsquo;s
  62. false, they return <code>nil</code>.
  63. </p>
  64. <ul>
  65. <li> <code>equal_p</code>
  66. </li><li> <code>unequal_abs</code>
  67. </li><li> <code>greater_p</code>
  68. </li><li> <code>greaterequal_p</code>
  69. </li><li> <code>less_p</code>
  70. </li><li> <code>lessequal_p</code>
  71. </li><li> <code>lessgreater_p</code>
  72. </li></ul>
  73. <p>The name of the function <code>unequal_abs</code>, for comparing absolute
  74. values, has been changed from <code>mpfr_cmpabs</code> to avoid confusion
  75. with the virtual machine&rsquo;s <code>compare</code> combinator. The
  76. <code>compare</code> combinator returns a <code>(nil,nil)</code> result (i.e.,
  77. true) if the
  78. <a name="index-compare-combinator-1"></a>
  79. operands are equal and a <code>nil</code> result if they&rsquo;re unequal,
  80. opposite from <code>unequal_abs</code>.
  81. </p>
  82. <hr size="1">
  83. <p>
  84. <font size="-1">
  85. This document was generated on <i>November 8, 2012</i> using <a href="http://www.nongnu.org/texi2html/"><i>texi2html 1.82</i></a>.
  86. </font>
  87. <br>
  88. </p>
  89. </body>
  90. </html>