<html lang="en"> <head> <title>PRECISION - The GNU Fortran Compiler</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="The GNU Fortran Compiler"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Intrinsic-Procedures.html#Intrinsic-Procedures" title="Intrinsic Procedures"> <link rel="prev" href="POPPAR.html#POPPAR" title="POPPAR"> <link rel="next" href="PRESENT.html#PRESENT" title="PRESENT"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with the Invariant Sections being ``Funding Free Software'', the Front-Cover Texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="PRECISION"></a> <p> Next: <a rel="next" accesskey="n" href="PRESENT.html#PRESENT">PRESENT</a>, Previous: <a rel="previous" accesskey="p" href="POPPAR.html#POPPAR">POPPAR</a>, Up: <a rel="up" accesskey="u" href="Intrinsic-Procedures.html#Intrinsic-Procedures">Intrinsic Procedures</a> <hr> </div> <h3 class="section">8.189 <code>PRECISION</code> — Decimal precision of a real kind</h3> <p><a name="index-PRECISION-912"></a><a name="index-model-representation_002c-precision-913"></a> <dl> <dt><em>Description</em>:<dd><code>PRECISION(X)</code> returns the decimal precision in the model of the type of <code>X</code>. <br><dt><em>Standard</em>:<dd>Fortran 95 and later <br><dt><em>Class</em>:<dd>Inquiry function <br><dt><em>Syntax</em>:<dd><code>RESULT = PRECISION(X)</code> <br><dt><em>Arguments</em>:<dd> <p><table summary=""><tr align="left"><td valign="top" width="15%"><var>X</var> </td><td valign="top" width="70%">Shall be of type <code>REAL</code> or <code>COMPLEX</code>. <br></td></tr></table> <br><dt><em>Return value</em>:<dd>The return value is of type <code>INTEGER</code> and of the default integer kind. <br><dt><em>See also</em>:<dd><a href="SELECTED_005fREAL_005fKIND.html#SELECTED_005fREAL_005fKIND">SELECTED_REAL_KIND</a>, <a href="RANGE.html#RANGE">RANGE</a> <br><dt><em>Example</em>:<dd> <pre class="smallexample"> program prec_and_range real(kind=4) :: x(2) complex(kind=8) :: y print *, precision(x), range(x) print *, precision(y), range(y) end program prec_and_range </pre> </dl> </body></html>