1 files changed, 45 insertions, 0 deletions
diff --git a/mpc/tests/comparisons.c b/mpc/tests/comparisons.c
new file mode 100644
index 0000000000..d10c878450
--- /dev/null
+++ b/mpc/tests/comparisons.c
@@ -0,0 +1,45 @@
+/* comparisons.c -- Comparison functions.
+
+Copyright (C) 2008, 2009, 2011 INRIA
+
+This file is part of GNU MPC.
+
+GNU MPC is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program. If not, see http://www.gnu.org/licenses/ .
+*/
+
+#include "mpc-tests.h"
+
+/* comparisons, see description in mpc-tests.h */
+int
+same_mpfr_value (mpfr_ptr got, mpfr_ptr ref, int known_sign)
+{
+   /* The sign of zeroes and infinities is checked only when
+      known_sign is true.                                    */
+   if (mpfr_nan_p (got))
+      return mpfr_nan_p (ref);
+   if (mpfr_inf_p (got))
+      return mpfr_inf_p (ref) &&
+            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
+   if (mpfr_zero_p (got))
+      return mpfr_zero_p (ref) &&
+            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
+   return mpfr_cmp (got, ref) == 0;
+}
+
+int
+same_mpc_value (mpc_ptr got, mpc_ptr ref, known_signs_t known_signs)
+{
+   return    same_mpfr_value (mpc_realref (got), mpc_realref (ref), known_signs.re)
+          && same_mpfr_value (mpc_imagref (got), mpc_imagref (ref), known_signs.im);
+}