Interface

      F_TYPE cosh (F_TYPE x)

1 - Description

    cosh() computes the hyperbolic cosine of x.

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

                           Entry-Point Names

    Generic                               Compaq
    Function   Data Type   OpenVMS        Tru64 UNIX
    Name       Required    Alpha          Alpha

    cosh       S_FLOAT     math$cosh_s    coshf
               T_FLOAT     math$cosh_t    cosh
               X_FLOAT     math$cosh_x    coshl
               F_FLOAT     math$cosh_f
               G_FLOAT     math$cosh_g

2 - Exceptions

    Exceptional Argument            Routine Behavior

    |x| > ln(2 * max_float)         Overflow

    Data
    Type  Value for: ln(2 * max_float)

    F     Hexadecimal: 721843B1
    G     Hexadecimal: 39EFFEFA2E4240A6
    S     Hexadecimal: 42B2D4FC
    T     Hexadecimal: 408633CE8FB9F87E
    X     Hexadecimal: 400C62E9BB80635D81D36125B64DA4A6

    F     Decimal: 88.72284
    G     Decimal: 709.7827128933840
    S     Decimal: 89.41599
    T     Decimal: 710.4758600739439
    X     Decimal: 11357.2165534747038948013483100922230678208