1 files changed, 104 insertions, 0 deletions
diff --git a/src/systemc/tests/systemc/misc/sim_tests/biquad/biquad2/testbench.cpp b/src/systemc/tests/systemc/misc/sim_tests/biquad/biquad2/testbench.cpp
new file mode 100644
index 000000000..983bada92
--- /dev/null
+++ b/src/systemc/tests/systemc/misc/sim_tests/biquad/biquad2/testbench.cpp
@@ -0,0 +1,104 @@
+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  testbench.cpp -- 
+
+  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+  changes you are making here.
+
+      Name, Affiliation, Date:
+  Description of Modification:
+
+ *****************************************************************************/
+
+/* Filename testbench.cc */
+/* This is the implementation file for synchronous process `testbench' */
+
+#include "testbench.h"
+
+float gen_sample(float t);
+
+void testbench::entry()
+{
+  float sample_val;
+  float result_val;
+  float time;
+
+  FILE *data1 = fopen("Sample", "w");
+  FILE *data2 = fopen("Result", "w");
+
+  reset.write(true);
+  wait(5);
+  reset.write(false);
+  wait();
+
+  time = 0.0;
+  while (true) {
+    sample_val = gen_sample(time);
+    sample.write(sample_val);
+    wait();
+    result_val = result.read();
+    fprintf(data1, "%f\t%f\n", time, sample_val);
+    fprintf(data2, "%f\t%f\n", time, result_val);
+    char buf[BUFSIZ];
+    sprintf( buf, "Input = %f\tOutput = %f\t", sample_val, result_val );
+    cout << buf << flush;
+    time += 1.0;
+  }
+} // end of entry function
+
+
+float
+gen_step(float t)
+{
+  if (t < 10.0)
+    return (0.0);
+  else 
+    return (1.0);
+}
+
+float
+gen_impulse(float t)
+{
+  if (t == 20.00)
+    return (1.00);
+  else 
+    return (0.00);
+}
+
+float
+gen_sine(float t, float freq) // freq in Hertz
+{
+  return sin(6.283185 * freq * t * CLOCK_PERIOD * 1e-9);
+}
+
+// This function actually generates the samples
+float
+gen_sample(float t)
+{
+  return (gen_sine(t, 100000));
+}