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Re^2: Problems with number resolution

by Anonymous Monk
on Jan 03, 2018 at 14:20 UTC ( #1206601=note: print w/replies, xml ) Need Help??


in reply to Re: Problems with number resolution
in thread Problems with number resolution

Thanks syphilis for your comment !

I have looked into all suggestions and learned a lot ! Thanks to all !

One question to Math::BigFloat, Math::Decimal and Math::Decimal64 :

* Is this correct: As soon as at least one variable in an expression is a Math object (e.g. MEtoD64 after use Math::Decimal64 qw/:all/;) the calculation is done with the Math-functions, not with the standard functions. If there is no Math object in the expression, the calculation is still done with the fast standard functions. So I can use both (accurate and fast arithmetic) on the contrary when I use "use bignum", where I always use the accurate Math functions for all operations.

* How can I check if a variable is a standard scalar or a Math object (like "ref" for hash/array)?

* Is there a good overview document, pointing out the differences between Math::BigFloat, Math::Decimal, Math::Decimal64, Math::BigInt and Math::BigRat. (When to use which library best?)

Replies are listed 'Best First'.
Re^3: Problems with number resolution
by Happy-the-monk (Canon) on Jan 03, 2018 at 19:52 UTC

    As to checking what kind of data is stored in a reference, use the ref function.

    Cheers, Sören

    Créateur des bugs mobiles - let loose once, run everywhere.
    (hooked on the Perl Programming language)

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