VMS Help RTL Routines, MTH$, MTH$HLOG2  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The Base 2 Logarithm (H-Floating Value) routine returns the base
    2 logarithm of the input value specified by floating-point-input-
    value as an H-floating value.

    Format

      MTH$HLOG2  h-log2 ,floating-point-input-value

1 - Returns

    None.

2 - Arguments

 h-log2

    OpenVMS usage:floating_point
    type:         H_floating
    access:       write only
    mechanism:    by reference

    Base 2 logarithm of floating-point-input-value. The h-log2
    argument is the address of an H-floating number that is this
    base 2 logarithm. MTH$HLOG2 writes the address of this logarithm
    into h-log2.

 floating-point-input-value

    OpenVMS usage:floating_point
    type:         H_floating
    access:       read only
    mechanism:    by reference

    The input value. The floating-point-input-value argument is the
    address of a floating-point number that is this input value. For
    MTH$HLOG2, floating-point-input-value specifies an H-floating
    number.