NAME
cosh,
coshf
- hyperbolic cosine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
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'') .