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Re: Reading and writing GSL random number generators
- From: Martin Jansche <jansche at ling dot ohio-state dot edu>
- To: <gsl-discuss at sources dot redhat dot com>
- Date: Wed, 28 May 2003 17:24:48 -0400 (EDT)
- Subject: Re: Reading and writing GSL random number generators
On Wed, 28 May 2003, Olaf Lenz wrote:
> What type is best to use when you really need one byte (i.e. 8 bit)?
In C99 (ISO 9899:1999) you can #include <stdint.h> and use int8_t
(signed) or uint8_t (unsigned), which, if they exist, are exactly 8
bits wide; int_least8_t is required to exist and is at least 8 bits
wide. However, this may not be a good move at this point, as C99
isn't widely supported yet.
> Is and will char always be 8 bit?
Doesn't look like it. Quoting the C99 standard: "An object declared
as type char is large enough to store any member of the basic
execution character set." (6.2.5) And: "The representation of each
member of the [...] execution basic character [set] shall fit in a
byte." (5.2.1) So char would have to be at least 8 bits wide, but
could be wider.
- martin