#include <math.h> double cosh(double x); float coshf(float x)
cosh computes the hyperbolic cosine of the argument x.
cosh(x) is defined as
Angles are specified in radians.
coshf is identical, save that it takes and returns
The computed value is returned. When the correct value would create an overflow,
cosh returns the value
HUGE_VAL with the
appropriate sign, and the global value
errno is set to
You can modify error handling for these functions using the
cosh is ANSI.
coshf is an extension.
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