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-'\" t
-.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
-.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
-.\"     <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" References consulted:
-.\"     Linux libc source code
-.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
-.\"     386BSD man pages
-.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
-.\" Modified 1996-06-08 by aeb
-.\" Modified 2002-07-27 by Walter Harms
-.\" (walter.harms@informatik.uni-oldenburg.de)
-.\"
-.TH cosh 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-cosh, coshf, coshl \- hyperbolic cosine function
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.P
-.BI "double cosh(double " x );
-.BI "float coshf(float " x );
-.BI "long double coshl(long double " x );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR coshf (),
-.BR coshl ():
-.nf
-    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
-        || /* Since glibc 2.19: */ _DEFAULT_SOURCE
-        || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
-.fi
-.SH DESCRIPTION
-These functions return the hyperbolic cosine of
-.IR x ,
-which is defined mathematically as:
-.P
-.in +4n
-.EX
-cosh(x) = (exp(x) + exp(\-x)) / 2
-.EE
-.in
-.SH RETURN VALUE
-On success, these functions return the hyperbolic cosine of
-.IR x .
-.P
-If
-.I x
-is a NaN, a NaN is returned.
-.P
-If
-.I x
-is +0 or \-0, 1 is returned.
-.P
-If
-.I x
-is positive infinity or negative infinity,
-positive infinity is returned.
-.P
-If the result overflows,
-a range error occurs,
-and the functions return
-.RB + HUGE_VAL ,
-.RB + HUGE_VALF ,
-or
-.RB + HUGE_VALL ,
-respectively.
-.SH ERRORS
-See
-.BR math_error (7)
-for information on how to determine whether an error has occurred
-when calling these functions.
-.P
-The following errors can occur:
-.TP
-Range error: result overflow
-.I errno
-is set to
-.BR ERANGE .
-An overflow floating-point exception
-.RB ( FE_OVERFLOW )
-is raised.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.na
-.nh
-.BR cosh (),
-.BR coshf (),
-.BR coshl ()
-T}	Thread safety	MT-Safe
-.TE
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-C99, POSIX.1-2001.
-.P
-The variant returning
-.I double
-also conforms to
-SVr4, 4.3BSD.
-.SH BUGS
-In glibc 2.3.4 and earlier,
-an overflow floating-point
-.RB ( FE_OVERFLOW  )
-exception is not raised when an overflow occurs.
-.SH SEE ALSO
-.BR acosh (3),
-.BR asinh (3),
-.BR atanh (3),
-.BR ccos (3),
-.BR sinh (3),
-.BR tanh (3)