Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 207.58

-1.5%

Dec 15 3:59 PM EST

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To: Joe NYC who wrote (64998)	12/5/2001 5:07:48 PM
From: TGPTNDR	Read Replies (1) of 275872

Joe, Re: <but my recollection is that hash table, the order of magnitude of the time to evaluate n cases is 1, meaning a fixed time.> That's about a 30K' view. Order of magnitude 1 would cover values from 1 to 9 or 900% range. In the program we're talking about the compiler can figure exactly the table size so it should be able to figure out how to index directly without a hash. But that's the kind of reason why you have to look at the machine code(as first choice) or the .asm(for a good clue). Stupid compilers may build a stupid lookup -- and that's why well hand assembled code will outrun straight C every time(sometimes by factors of 1000s). tgptndr

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