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diff --git a/tests/data_check.tpl b/tests/data_check.tpl
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+++ b/tests/data_check.tpl
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+/* data_check.tpl -- template file for checking result against data
+   file.
+
+   Usage: Before including this template file in your source file,
+   #define the prototype of the function under test in the
+   CALL_MPC_FUNCTION symbol, see tadd_tmpl.c for an example.
+
+   To test the reuse of the first parameter, #define the
+   MPC_FUNCTION_CALL_REUSE_OP1 and MPC_FUNCTION_CALL_REUSE_OP2 symbols
+   with the first and second input parameter reused as the output, see
+   tadd_tmpl.c for an example. It is not possible to test parameter
+   reuse in functions with two output (like mpc_sin_cos) with this
+   system.
+
+Copyright (C) 2012, 2013 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/ .
+*/
+
+#ifndef MPC_FUNCTION_CALL
+#error Define MPC_FUNCTION_CALL before including 'data_check.tpl'. 
+#endif
+
+int
+data_check_template (const char* descr_file, const char * data_file)
+{
+  static int rand_counter = 0;
+
+  mpc_datafile_context_t datafile_context;
+  mpc_datafile_context_t *dc = &datafile_context;
+
+  mpc_fun_param_t params;
+  mpc_operand_t *P = params.P; /* developer-friendly alias */
+
+  read_description (&params, descr_file);
+  init_parameters (&params);
+
+  open_datafile (dc, data_file);
+  while (datafile_context.nextchar != EOF) {
+    read_line (dc, &params);
+    set_mpfr_flags (rand_counter);
+    MPC_FUNCTION_CALL;
+    check_mpfr_flags (rand_counter++);
+    check_data (dc, &params, 0);
+
+#ifdef MPC_FUNCTION_CALL_SYMMETRIC
+      MPC_FUNCTION_CALL_SYMMETRIC;
+      check_data (dc, &params, 0);
+#endif
+
+#ifdef MPC_FUNCTION_CALL_REUSE_OP1
+    if (copy_parameter (&params, 1, 2) == 0)
+      {
+        MPC_FUNCTION_CALL_REUSE_OP1;
+        check_data (dc, &params, 2);
+      }
+#endif
+
+#ifdef MPC_FUNCTION_CALL_REUSE_OP2
+    if (copy_parameter (&params, 1, 3) == 0)
+      {
+        MPC_FUNCTION_CALL_REUSE_OP2;
+        check_data (dc, &params, 3);
+      }
+#endif
+
+#ifdef MPC_FUNCTION_CALL_REUSE_OP3
+    if (copy_parameter (&params, 1, 4) == 0)
+      {
+        MPC_FUNCTION_CALL_REUSE_OP3;
+        check_data (dc, &params, 4);
+      }
+#endif
+  }
+  close_datafile (dc);
+
+  clear_parameters (&params);
+
+  return 0;
+}