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.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
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.\"
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.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
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.\" Distributed under GPL
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.\" %%%LICENSE_END
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.\"
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.TH CTANH 3 2017-09-15 "" "Linux Programmer's Manual"
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.SH NAME
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ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
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.SH SYNOPSIS
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.B #include <complex.h>
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.PP
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.BI "double complex ctanh(double complex " z ");"
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.br
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.BI "float complex ctanhf(float complex " z );
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.br
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.BI "long double complex ctanhl(long double complex " z ");"
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.PP
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Link with \fI\-lm\fP.
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.SH DESCRIPTION
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These functions calculate the complex hyperbolic tangent of
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.IR z .
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.PP
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The complex hyperbolic tangent function is defined
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mathematically as:
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.PP
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.nf
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ctanh(z) = csinh(z) / ccosh(z)
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.fi
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.SH VERSIONS
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These functions first appeared in glibc in version 2.1.
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.SH ATTRIBUTES
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For an explanation of the terms used in this section, see
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.BR attributes (7).
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.TS
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allbox;
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lbw27 lb lb
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l l l.
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Interface Attribute Value
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T{
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.BR ctanh (),
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.BR ctanhf (),
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.BR ctanhl ()
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T} Thread safety MT-Safe
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.TE
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.sp 1
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.SH CONFORMING TO
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C99, POSIX.1-2001, POSIX.1-2008.
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.SH SEE ALSO
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.BR cabs (3),
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.BR catanh (3),
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.BR ccosh (3),
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.BR csinh (3),
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.BR complex (7)
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.SH COLOPHON
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This page is part of release 4.15 of the Linux
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.I man-pages
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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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\%https://www.kernel.org/doc/man\-pages/.
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