140 lines
3.2 KiB
HTML
140 lines
3.2 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of CLOG10</TITLE>
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</HEAD><BODY>
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<H1>CLOG10</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2017-09-15<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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clog10, clog10f, clog10l - base-10 logarithm of a complex number
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>#define _GNU_SOURCE</B> /* See <A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A>(7) */
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<BR>
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<B>#include <<A HREF="file:///usr/include/complex.h">complex.h</A>></B>
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<P>
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<B>double complex clog10(double complex </B><I>z</I><B>);</B>
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<BR>
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<B>float complex clog10f(float complex </B><I>z</I><B>);</B>
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<BR>
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<B>long double complex clog10l(long double complex </B><I>z</I><B>);</B>
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<P>
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Link with <I>-lm</I>.
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The call
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<I>clog10(z)</I>
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is equivalent to:
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<P>
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<BR> clog(z)/log(10)
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<P>
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or equally:
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<P>
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<BR> log10(cabs(c)) + I * carg(c) / log(10)
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<P>
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The other functions perform the same task for
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<I>float</I>
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and
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<I>long double</I>.
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<P>
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Note that
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<I>z</I>
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close to zero will cause an overflow.
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<A NAME="lbAE"> </A>
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<H2>VERSIONS</H2>
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These functions first appeared in glibc in version 2.1.
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<A NAME="lbAF"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>clog10</B>(),
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<B>clog10f</B>(),
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<B>clog10l</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<A NAME="lbAG"> </A>
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<H2>CONFORMING TO</H2>
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These functions are GNU extensions.
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The identifiers are reserved for future use in C99 and C11.
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+cabs">cabs</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+cexp">cexp</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+clog">clog</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+clog2">clog2</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?7+complex">complex</A></B>(7)
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<A NAME="lbAI"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="1"><A HREF="#lbAB">NAME</A><DD>
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<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="4"><A HREF="#lbAE">VERSIONS</A><DD>
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<DT id="5"><A HREF="#lbAF">ATTRIBUTES</A><DD>
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<DT id="6"><A HREF="#lbAG">CONFORMING TO</A><DD>
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<DT id="7"><A HREF="#lbAH">SEE ALSO</A><DD>
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<DT id="8"><A HREF="#lbAI">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:37 GMT, March 31, 2021
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