How many distinct values?

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  1. #1
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    How many distinct values?

    Hello everyone,


    My question is comes from when I write a C++ program. Not find suitable place to post. :-)

    My question comes from page 175 of Numerical Computation Guide. Here is a link,

    http://www.physics.ohio-state.edu/~d...point_math.pdf

    I do not know why if β = 2, p = 3, emin = -1 and emax = 2 there are
    16 distinct floating-point values in formular (1) in page 174? Are
    there any more general formular to calculate the distinct value for
    formular (1) for any given β, p, emin and emax?

    (sorry, I can not post math formular in this text box)


    thanks in advance,
    George

  2. #2
    & the hat of GPL slaying Thantos's Avatar
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    e is the exponent which can range -1 <= e <= 2 which gives 4 different exponent values. 2 raised to the 4th power is 16.

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    Thanks Thantos,


    I agree there are 4 exponent values. But how many significant values do you think there are?

    Quote Originally Posted by Thantos View Post
    e is the exponent which can range -1 <= e <= 2 which gives 4 different exponent values. 2 raised to the 4th power is 16.

    regards,
    George

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