On Wed, Sep 17, 2008 at 10:53 PM, Maciej Stachowiak <[EMAIL PROTECTED]> wrote:
> I think it is a tenable position that 1.5m === 1.5000m based on the > "cohort" concept, since performing the same operation on both will give > answers that are in the same "cohort" equivalence class. But 1.5 / 10.0 != > 1.5m / 10.0, and indeed, the answers would not even be in the same cohort. A > notion of 'cohort' equivalence class based on correspondence in the abstract > to the same real number but divorced from the actual semantics of the > programming language strikes me as incoherent. I think such a notion of > equivalence class only makes sense if performing identical operations on > members of the same cohort gives answers which are in the same cohort. > Are -0 and 0 in the same cohort? -- Cheers, --MarkM
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