GNU/Linux |
CentOS 4.8 |
i386 |
cosh(3) |
cosh, coshf, coshl − hyperbolic cosine function
#include <math.h>
double cosh(double x);
float coshf(float x);
long double coshl(long double x);
The cosh() function returns the hyperbolic cosine of x, which is defined mathematically as (exp(x) + exp(-x)) / 2.
SVID 3, POSIX, BSD 4.3, ISO 9899 (C99). The float and the long double variants are C99 requirements.
acosh(3), asinh(3), atanh(3), sinh(3), tanh(3)
cosh(3) |