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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)
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