diff options
Diffstat (limited to 'lib/crypto/mpi/mpi-cmp.c')
| -rw-r--r-- | lib/crypto/mpi/mpi-cmp.c | 46 |
1 files changed, 10 insertions, 36 deletions
diff --git a/lib/crypto/mpi/mpi-cmp.c b/lib/crypto/mpi/mpi-cmp.c index 0835b6213235..ceaebe181cd7 100644 --- a/lib/crypto/mpi/mpi-cmp.c +++ b/lib/crypto/mpi/mpi-cmp.c @@ -45,54 +45,28 @@ int mpi_cmp_ui(MPI u, unsigned long v) } EXPORT_SYMBOL_GPL(mpi_cmp_ui); -static int do_mpi_cmp(MPI u, MPI v, int absmode) +int mpi_cmp(MPI u, MPI v) { - mpi_size_t usize; - mpi_size_t vsize; - int usign; - int vsign; + mpi_size_t usize, vsize; int cmp; mpi_normalize(u); mpi_normalize(v); - usize = u->nlimbs; vsize = v->nlimbs; - usign = absmode ? 0 : u->sign; - vsign = absmode ? 0 : v->sign; - - /* Compare sign bits. */ - - if (!usign && vsign) + if (!u->sign && v->sign) return 1; - if (usign && !vsign) + if (u->sign && !v->sign) return -1; - - /* U and V are either both positive or both negative. */ - - if (usize != vsize && !usign && !vsign) + if (usize != vsize && !u->sign && !v->sign) return usize - vsize; - if (usize != vsize && usign && vsign) - return vsize + usize; + if (usize != vsize && u->sign && v->sign) + return vsize - usize; if (!usize) return 0; cmp = mpihelp_cmp(u->d, v->d, usize); - if (!cmp) - return 0; - if ((cmp < 0?1:0) == (usign?1:0)) - return 1; - - return -1; -} - -int mpi_cmp(MPI u, MPI v) -{ - return do_mpi_cmp(u, v, 0); + if (u->sign) + return -cmp; + return cmp; } EXPORT_SYMBOL_GPL(mpi_cmp); - -int mpi_cmpabs(MPI u, MPI v) -{ - return do_mpi_cmp(u, v, 1); -} -EXPORT_SYMBOL_GPL(mpi_cmpabs); |