1ATANL(3P)                  POSIX Programmer's Manual                 ATANL(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       atanl — arc tangent function
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SYNOPSIS

16       #include <math.h>
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18       long double atanl(long double x);
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DESCRIPTION

21       Refer to atan().
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24       Portions of this text are reprinted and reproduced in  electronic  form
25       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
26       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
27       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
28       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
29       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
30       event of any discrepancy between this version and the original IEEE and
31       The  Open Group Standard, the original IEEE and The Open Group Standard
32       is the referee document. The original Standard can be  obtained  online
33       at http://www.unix.org/online.html .
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35       Any  typographical  or  formatting  errors that appear in this page are
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37       files  to  man page format. To report such errors, see https://www.ker‐
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42IEEE/The Open Group                  2013                            ATANL(3P)
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