NAME
cosh, coshf
— hyperbolic cosine
function
LIBRARY
library “libm”
SYNOPSIS
#include
<math.h>
double
cosh(double
x);
float
coshf(float
x);
DESCRIPTION
Thecosh()
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”).