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CPML, ceil(), Description
 *Conan The Librarian 

    ceil() returns the smallest floating-point number of integral
    value greater than or equal to x.

                           Entry-Point Names

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

    ceil       S_FLOAT     math$ceil_s    ceilf
               T_FLOAT     math$ceil_t    ceil
               X_FLOAT     math$ceil_x    ceill
               F_FLOAT     math$ceil_f
               G_FLOAT     math$ceil_g
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