in reply to Re^5: Need more precision.
in thread Need more precision.

I came back to look at your other post above, and noticed this one that I somehow missed before.

The value in normalized notation is 2.025 * 10^-17, which is well within the capabilities of doubles,

You're right of course, it is. Until you add it to a value in the range -1.xe0 .. 1.xe0; then it disappears.


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Re^7: Need more precision.
by RonW (Parson) on Jun 15, 2015 at 18:31 UTC
    Until you add it to a value in the range -1.xe0 .. 1.xe0; then it disappears.

    Right. I had forgotten the addition from your original post.

    I'm thinking that cascading 3 or 4 32 bit integers (as I demonstrated in an earlier post) to create 96 or 128 bit integers will get you what you are looking for.