cosh |
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cosh |
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cosh |
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cosh |
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double cosh( double x )
double x; /* a double value */
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Synopsis |
#include "math.h"
The cosh function returns the hyperbolic cosine of x: (ex + e-x )/ 2.
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Parameters |
x may be any value.
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Return Value |
cosh returns a value greater than or equal to 1. If the magnitude of x is so large, such that cosh(x) cannot be represented, then the system error variable errno is set to ERANGE , and cosh returns HUGE_VAL.
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See Also |
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