NAME
cosh,
coshf —
hyperbolic cosine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
cosh(
double
x);
float
coshf(
float
x);
DESCRIPTION
The
cosh() and
coshf() functions compute the
hyperbolic cosine of
x.
RETURN VALUES
If the magnitude of x is too large,
cosh(
x) and
coshf(
x) return Inf and sets the
global variable
errno to ERANGE.
SEE ALSO
acos(3),
asin(3),
atan(3),
atan2(3),
cos(3),
math(3),
sin(3),
sinh(3),
tan(3),
tanh(3)
STANDARDS
The
cosh() function conforms to
ANSI
X3.159-1989 (“ANSI C89”).