format of representing 10e-5 in binary

barun has asked for the wisdom of the Perl Monks concerning the following question:

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Re: format of representing 10e-5 in binary by BrowserUk (Patriarch) on Feb 22, 2005 at 05:50 UTC
There are many possible formats. The three most prevalent are the 3 IEE-754 representations. 32-bit (C`floats`), 64-bit (C `doubles`) and 80-bit (some compilers C representation `extended`). For the nitty-gritty detail of the binary representations see IEE_754 and IEE reals. Perl uses either of the 32 or 64 bit representations internally. These correspond to the 'f' and 'd' pack formats respectively. If you need more detail of the specific layout of the three parts of the binary representation, tell us what exactly you are trying to do? Examine what is said, not who speaks. Silence betokens consent. Love the truth but pardon error.	[reply] [d/l] [select]
Re: format of representing 10e-5 in binary by Zaxo (Archbishop) on Feb 22, 2005 at 06:09 UTC
This may be more detail than you want, but it's the canonical web reference for floating-point representation of numbers: What Every Computer Scientist Should Know About Floating-Point Arithmetic (PDF). Perl stores numbers in the native f-p format for your machine. That is usually IEEE-754 or something close to it. After Compline, Zaxo	[reply]