2 files changed, 6 insertions, 0 deletions
diff --git a/mpi/mpi.c b/mpi/mpi.c
index 24df7c30..20a48a12 100644
--- a/mpi/mpi.c
+++ b/mpi/mpi.c
@@ -2998,6 +2998,11 @@ int    mp_count_bits(mp_int *mp)
 
 /* }}} */
 
+int  mp_is_pow_two(mp_int *mp)
+{
+  return s_mp_ispow2(mp) >= 0;
+}
+
 /* {{{ mp_read_radix(mp, str, radix) */
 
 /*
diff --git a/mpi/mpi.h b/mpi/mpi.h
index 49ccd294..fb9e47e8 100644
--- a/mpi/mpi.h
+++ b/mpi/mpi.h
@@ -223,6 +223,7 @@ int    mp_unsigned_bin_size(mp_int *mp);
 mp_err mp_to_unsigned_bin(mp_int *mp, unsigned char *str);
 
 int    mp_count_bits(mp_int *mp);
+int    mp_is_pow_two(mp_int *mp);
 
 #if MP_COMPAT_MACROS
 #define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))