#19706: Upgrade GMP
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Reporter: jdemeyer | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.11
Component: packages: | Resolution:
optional | Merged in:
Keywords: | Reviewers:
Authors: Jeroen Demeyer | Work issues:
Report Upstream: N/A | Commit:
Branch: | 94ac0168fcb2c77883bd37b121f047ccd94d9e1a
u/jdemeyer/upgrade_gmp | Stopgaps:
Dependencies: |
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Comment (by fbissey):
My discussion with Paul is in French, roughly translated it goes:
"It is linked to a change of behavior of the mpz_invert between `5.1.3`
and `6.0.0` when the modulo (last argument) is 1
{{{
zimmerma@coing:/tmp$ cat e.c
#include <stdio.h>
#include "gmp.h"
main()
{
mpz_t a, b;
int ret;
printf ("GMP %s\n", gmp_version);
mpz_init_set_ui (a, 1);
mpz_init_set_ui (b, 1);
ret = mpz_invert (a, a, b);
gmp_printf ("ret=%d a=%Zd\n", ret, a);
}
zimmerma@coing:/tmp$ gcc e.c /usr/local/gmp-5.1.3/lib/libgmp.a
zimmerma@coing:/tmp$ ./a.out
GMP 5.1.3
ret=0 a=1
zimmerma@coing:/tmp$ gcc e.c /usr/local/gmp-6.0.0/lib/libgmp.a
zimmerma@coing:/tmp$ ./a.out
GMP 6.0.0
ret=1 a=0
}}}
`GMP 6.0.0`'s behavior feels more logical to me
"
--
Ticket URL: <http://trac.sagemath.org/ticket/19706#comment:9>
Sage <http://www.sagemath.org>
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