It seems that 1.3.1 fixes the problem. On Jan 30, 4:54 pm, Bill Hart <goodwillh...@googlemail.com> wrote: > I've placed an MPIR 1.3.1 which hopefully fixes this issue, here: > > http://www.mpir.org/mpir-1.3.1.tar.gz > > Let me know if there are further problems. > > Bill. > > 2010/1/30 Bill Hart <goodwillh...@googlemail.com>: > > > Hi Dan, > > > Yes, there is a bug. The fix is to replace line 1130 of mpn/gcdext.c with: > > > *s0size = 1 - (s0p[0] == 0); > > > I will issue a service release shortly to fix this issue. > > > Can you let us know if this fixes your (other) program. > > > Bill. > > > 2010/1/30 Bill Hart <goodwillh...@googlemail.com>: > >> Hi Dan, > > >> That definitely looks like a bug. You are correct in that size should > >> be set to zero. > > >> It's slightly bizarre in that we haven't altered mpz_gcdext, that I > >> recall. But we did modify mpn_gcdext, so I assume the bug is there. > > >> I'll take a look. > > >> Bill. > > >> 2010/1/30 Dan Grayson <d...@math.uiuc.edu>: > >>> #include <mpir.h> > >>> #include <assert.h> > > >>> int main () { > >>> mpz_t a,b,d,u,v; > >>> mpz_init(a); > >>> mpz_init(b); > >>> mpz_init(d); > >>> mpz_init(u); > >>> mpz_init(v); > >>> mpz_set_si(a,1); > >>> mpz_set_si(b,2); > >>> mpz_gcdext(d,u,v,a,b); > >>> assert(!(u->_mp_size == 1 && u->_mp_d[0] == 0)); > >>> assert(!(v->_mp_size == 1 && v->_mp_d[0] == 0)); > >>> return 0; > >>> } > > >>> produces an assertion failure with 1.3.0 but not with 1.2.1. I > >>> believe that could be a bug, because the integer 0 should have the > >>> size set to 0, according to the documentation; in any case, our > >>> (other) program doesn't work. The OS is Mac OS X 10.6. > > >>> -- > >>> You received this message because you are subscribed to the Google Groups > >>> "mpir-devel" group. > >>> To post to this group, send email to mpir-de...@googlegroups.com. > >>> To unsubscribe from this group, send email to > >>> mpir-devel+unsubscr...@googlegroups.com. > >>> For more options, visit this group > >>> athttp://groups.google.com/group/mpir-devel?hl=en.
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