I think you're right - *adding* the two sizes makes no sense.  cc'ing Dmitry
also for his check.

David


Rasmus Villemoes <li...@rasmusvillemoes.dk> wrote:

> If u and v both represent negative integers and their limb counts
> happen to differ, mpi_cmp will always return a positive value - this
> is obviously bogus. u is smaller than v if and only if it is larger in
> absolute value.
> 
> Signed-off-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
> ---
>  lib/mpi/mpi-cmp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/mpi/mpi-cmp.c b/lib/mpi/mpi-cmp.c
> index 1871e7b61ca0..3801694240d8 100644
> --- a/lib/mpi/mpi-cmp.c
> +++ b/lib/mpi/mpi-cmp.c
> @@ -57,7 +57,7 @@ int mpi_cmp(MPI u, MPI v)
>       if (usize != vsize && !u->sign && !v->sign)
>               return usize - vsize;
>       if (usize != vsize && u->sign && v->sign)
> -             return vsize + usize;
> +             return vsize - usize;
>       if (!usize)
>               return 0;
>       cmp = mpihelp_cmp(u->d, v->d, usize);
> -- 
> 2.1.3
> 
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