smimou changed the topic of #ocaml to: OCaml 3.08.3 available! | Archive of Caml Weekly News: http://sardes.inrialpes.fr/~aschmitt/cwn/ | A free book: http://cristal.inria.fr/~remy/cours/appsem/ | Mailing List: http://caml.inria.fr/bin/wilma/caml-list/ | Cookbook: http://pleac.sourceforge.net/
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<mflux_> araujo, there are monad libraries for ocaml and a language extension making their use similar to haskell, but the lack of type classes somewhat hinders that capability
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<ulfdoz_> re
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<mflux_> good morning
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<slashvar> Hi there
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<araujo> Morning
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<nlv11757_> are Int64 in two's Complement Representation?
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<mflux_> I would imagine that depends on the platform, but otoh I can't name any one's complement platform
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<nlv11757_> Int64 doesnt abstract away from the underlying representation on the platform?
<nlv11757_> cause otherwise, you can't be very convinced about you're code on other platforms
<mflux_> Int64 guarantees only that all arithmetic operations are taken module 2^63
<mflux_> hm, but of course some unportable behavior could be exhibited by using bitwise and on negative numbers
<mflux_> I64_add is defined natively to do c's a + b
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<mflux_> I'm not sure if ocaml even supports a platform with one's comlement integers..
<nlv11757_> me neither
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<nlv11757_> this two's complementary representation is quite misleading when using shift_right that keeps the sign
<nlv11757_> let's just say you need to pay attention
<nlv11757_> hmm why is 'Int64.shift_right (Int64.of_int (-1)) 32' still -1L ?
<nlv11757_> Int64.of_int (-1) is in bit representation 64 ones
<nlv11757_> right?
<mellum> nlv11757_: yes
<nlv11757_> in my head is see shift_right .. 32 shifting all the 64 ones to the right.....reproducing the minus sign in the vaccant bits is something i cant visualize
<nlv11757_> its not just putting a 1 in the most significant bit, because that wouldnt make Int64.of_int (-1)
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<ulfdoz_> cya
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<vincenz> hi
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<vincenz> mflux: ping
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<araujo> Hello O'Camlers
<vincenz> hi
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