Problem with large values in GMP...
vincent at vinc17.net
Tue Mar 22 14:45:44 UTC 2016
On 2016-03-17 19:06:58 +0100, Torbjörn Granlund wrote:
> Vincent Lefevre <vincent at vinc17.net> writes:
> On 2016-03-17 18:19:27 +0100, Torbjörn Granlund wrote:
> > We use "int" for the limb count in mpz_t; code manipulating that should
> > not try to set values which do not fit.
> Why an int and not a long?
> Please resend this message in 1991. :-)
The use of an int should be documented. In the manual:
Counts of limbs of a multi-precision number represented in the C type
`mp_size_t'. Currently this is normally a `long', but on some systems
it's an `int' for efficiency, and on some systems it will be `long
long' in the future.
so that one can have the false impression that mp_size_t is also
used internally for the size of an mpz_t. Thus the limitation is
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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