Developer's Daily | Unix by Example |
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cosh ? hyperbolic cosine function |
#include <math.h> double cosh(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 |
acosh(3), asinh(3), atanh(3), sinh(3), tanh(3) |