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Re: More Fun with Zero!

by hsmyers (Canon)
on Jul 24, 2001 at 18:12 UTC ( #99336=note: print w/replies, xml ) Need Help??


in reply to More Fun with Zero!

Speaking only from the confines of my own narrow little mind, I really really don't like over loading undefined. It is far more useful at least for me, to deal with things like +/- infinity, NAN and other similar such. One of the first things I did when first using a math chip (AMD 9511 or AMD 9512) was to write the C to ASSM interface to handle errors and exceptions in general-- typically preserve and return the status word. More to the point, since there are a lot of ways to mess the math, I'd rather have more information than less! just my 0.02$ worth hsm

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[jdporter]: one prog I have has a UI which allows to input a bit mask
[jdporter]: currently it expects the bitmask to be in the form of a hex number, e.g. 0x0101
[jdporter]: but I'd like to let the user specify it as individual bits, i.e. 0b0000000100000001
[jdporter]: there is no bit/binary equivalent of hex, right?
[jdporter]: I guess that the most direct way of doing it is with some magical incantation involving unpack or whatever
[jdporter]: let me google that for me ;-)
[jdporter]: hex points explicitly to oct, which does the job. :-D
[jdporter]: omg, I f love Perl!
[choroba]: say unpack 'H*', pack 'B*', $mask =~ /0b([01]+)/;

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