tpow_z.c: full test coverage

git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@956 211d60ee-9f03-0410-a15a-8952a2c7a4e4

1 files changed, 37 insertions, 21 deletions

diff --git a/tests/tpow_z.c b/tests/tpow_z.c
index 47f0cbb..faf29a3 100644
--- a/tests/tpow_z.c
+++ b/tests/tpow_z.c
@@ -1,6 +1,6 @@
 /* test file for mpc_pow_z.
 
-Copyright (C) INRIA, 2009
+Copyright (C) INRIA, 2009, 2011
 
 This file is part of the MPC Library.
 
@@ -19,29 +19,45 @@ along with the MPC Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 MA 02111-1307, USA. */
 
+#include <limits.h> /* for CHAR_BIT */
 #include "mpc-tests.h"
 
 int
 main (void)
 {
-  mpc_t z;
-  mpz_t t;
-
-  test_start ();
-
-  mpc_init2 (z, 5);
-  mpz_init_set_ui (t, 1);
-  mpc_set_ui_ui (z, 17, 42, MPC_RNDNN);
-  mpc_pow_z (z, z, t, MPC_RNDNN);
-  if (mpc_cmp_si_si (z, 17, 42) != 0)
-    {
-      printf ("Error for mpc_pow_z (1)\n");
-      exit (1);
-    }
-  mpc_clear (z);
-  mpz_clear (t);
-
-  test_end ();
-
-  return 0;
+   mpc_t z;
+   mpz_t t;
+
+   test_start ();
+
+   mpc_init2 (z, 5);
+   mpz_init_set_ui (t, 1ul);
+   mpc_set_ui_ui (z, 17ul, 42ul, MPC_RNDNN);
+   mpc_pow_z (z, z, t, MPC_RNDNN);
+   if (mpc_cmp_si_si (z, 17l, 42l) != 0) {
+         printf ("Error for mpc_pow_z (1)\n");
+         exit (1);
+   }
+   mpz_set_si (t, -1l);
+   mpc_set_ui_ui (z, 1ul, 1ul, MPC_RNDNN);
+   mpc_pow_z (z, z, t, MPC_RNDNN);
+   mpc_mul_ui (z, z, 2ul, MPC_RNDNN);
+   if (mpc_cmp_si_si (z, 1l, -1l) != 0) {
+         printf ("Error for mpc_pow_z (-1)\n");
+         exit (1);
+   }
+   mpz_set_ui (t, 1ul);
+   mpz_mul_2exp (t, t, sizeof (long) * CHAR_BIT);
+   mpc_set_ui_ui (z, 0ul, 1ul, MPC_RNDNN);
+   mpc_pow_z (z, z, t, MPC_RNDNN);
+   if (mpc_cmp_si_si (z, 1l, 0l) != 0) {
+         printf ("Error for mpc_pow_z (4*large)\n");
+         exit (1);
+   }
+   mpc_clear (z);
+   mpz_clear (t);
+
+   test_end ();
+
+   return 0;
 }