src/systemc/tests/systemc/misc/synth/concat/lvalue/test.cpp

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  test.cpp -- 

  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15

 *****************************************************************************/

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//
//	Verifies the functionality of concanetation operation.
//	Operands form the rvalue of an assignment
//
//	Author: PRP
//	Date Created: 19 Feb 99
//


#include "systemc.h"
#include "test.h"
 
void test::entry() 
{
  sc_lv<8> a;
  sc_lv<8> b;
  sc_lv<8> c;
  sc_lv<8> d;
  sc_lv<24> e;
  sc_lv<24> f;

  // sc_logic k;
  // sc_logic n;
  // sc_logic m, o, p, q, r, s, t, u;
  sc_lv<1> k, n, m, o, p, q, r, s, t, u;

  sc_lv<32> x;
  sc_lv<32> y;
  sc_lv<32> z;

  int i,j;
 
  while (true) {

  wait ();


  b = "00000001";	// 1
  c = "00000011";	// 3
  d = "00001111";	// 15
  
  // =============== Array + Array ====================================

  (a, f) = "00000000000000000000000000000011"; // a = 0, f = 3

  // =============== Cascading ====================================
  // cascading  array variables
  (a, f) = (b, c, d, a);
	// a = 00000001  f = "00000011 00001111 00000000"
  z = (a, f);	

  // composing cascaded  array variables
  x = ( sc_lv_base( "00000011" ), "00000011", "00000011", "00000101");	
  (a, (b, c, d)) = x;
  z = z | x;	// z = 00000011 00000011 00001111 00000101

  // =============== Array (variable) + Scalar ==============================

  (b, c, d, a.range (7, 2), k, n) = (a, b, c, d);
	// b = 00000011  c = 00000011  d = 00000011 a = 00000111
	// k = 0  n = 1
  z = z | (a, b, c, d); // z = 00000111 00000011 00001111 00000111

  ( k, m, a.range (5, 0)) = z.range (15, 8);
	// k = 0  m = 0  a = 00001111
  z = z | ( sc_lv_base( n ), m, k, n, "0000", a, "0000000000000000");
	// z = 10010111 00001111 00001111 00000111

  // =============== Null Vector ====================================

  ( m, n, o, p, q, r, s, t ) = "11011010";
  a = ( sc_lv_base( s ), t, q, r, o, m, n, p);	// a = "10100111"
  z = (z.range (31, 8), a); 	// z = 10010111 00001111 00001111 10100111

  b = "00000000";

  z =  z | (b, b, b, z.range (7, 0));

  // =============== LHS/RHS of different widths ==============================

  (x.range (15, 0), x.range (31, 16)) = ("1001011100001111000011111010011101");
  // RHS is (z, "01")
  // x = 00111110 10011101 01011100 00111100

  (z.range (31, 16), z.range (15, 0)) = (x.range (7, 0), x.range (23, 16),
					 x.range (15, 8), x.range (31, 24));
	// z = 00111100 10011101 01011100 00111110 
	
  o1 = z.to_int(); 
  wait();

  }
}