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    Re: Russian formula for Casio
    From: George Huxtable
    Date: 2005 Feb 13, 01:20 +0000

    About using a Casio calculator to do sexagesimal conversions-
    Do check, won't you, that the conversion routines work correctly for
    negative angles.
    On the Casio programmable calculator FX 730 P, and the later but similar FX
    795 P, the function  DMS$(dd.ddd) correctly converts a number in decimal
    degrees into degrees minutes and seconds as a character string, even if
    it's negative.
    However, the function DEG(dd,mm,ss), which converts an angle in degrees,
    minutes, and seconds into decimal degrees, goes wrong for negative angles,
    unless you are careful to attach a negative sign to the minutes and the
    seconds, as well as to the degrees.
    I have no idea whether this problem applies also to the FX 250 and FX 260
    being discussed, but it's worth checking.
    contact George Huxtable by email at george@huxtable.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

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