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From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
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Newsgroups: comp.lang.ada
Subject: Re: understanding floating point types
Date: Sun, 22 Aug 2010 19:22:44 +0200
Organization: Ada At Home
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Date: 2010-08-22T19:22:44+02:00
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Le Sun, 22 Aug 2010 15:57:42 +0200, Dmitry A. Kazakov  =

<mailbox@dmitry-kazakov.de> a =E9crit:
>> Thanks. The Float'Machine_Mantissa remains constant in your examples
>> with 1 and 2 precision digits. Is the Float'Machine_Mantissa a
>> predefined value that is constant for any precision digit requested?
>
> No, it is the is best fitting machine number available (compiler's  =

> choice):
Yes, because it would be too much expensive to create a custom float  =

representation to save a few bits. It would even requires to redefine al=
l  =

operations (a kind of FPU emulation, like the one Pascal did for old  =

i386/i486).