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cosh-Hyperbolic Cosine of Angle

Interface 

F_TYPE cosh (F_TYPE x)

Description

cosh() computes the hyperbolic cosine of x.

cosh(x) is defined as (e**x + e**(-x))/2.

Exceptions

Exceptional Argument       Routine Behavior

|x| > ln(2 * max_float)    Overflow
See Also

Appendix A, Critical Floating-Point Values