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'') .