xref: /gem5/src/systemc/tests/systemc/datatypes/bit/sc_bitref/test01/test_bitref.cpp

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

  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.

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

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

  test_bitref.cpp -- Test using bitrefs in boolean contexts

  Original Author: Philipp A. Hartmann, OFFIS, 2013-10-28

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

#include <systemc.h>

#define sc_nassert( expr ) \
  sc_assert( !(expr) )

using sc_dt::sc_bitref;
using sc_dt::sc_bitref_r;
using sc_dt::sc_concref;
using sc_dt::sc_concref_r;
using sc_dt::sc_subref;
using sc_dt::sc_subref_r;

int sc_main(int,char*[])
{
  sc_bv<8> bv = "00101010";
  sc_lv<8> lv = "1XZ01010";

  // plain bitrefs
  {
    sc_nassert( bv[0] );
    sc_assert ( !bv[0] );
    // sc_assert( ~bv[0] ); // could not convert ... to ‘bool’
    sc_nassert( bv[0].to_bool() );
    sc_assert ( !bv[0].to_bool() );
    sc_assert( (~bv[0]).to_bool() );

#if IEEE_1666_CPLUSPLUS >= 201103L
    sc_assert( bv[1] );
#endif
    sc_nassert( !bv[1] );
    sc_assert ( bv[1].to_bool() );
    sc_nassert( (~bv[1]).to_bool() );

    sc_nassert( bv[0] == true );
    sc_assert ( bv[0] != true );
    sc_assert ( bv[0] == SC_LOGIC_0 );
    sc_nassert( bv[0].to_bool() );
    sc_assert( bv[1].to_bool() );
    sc_nassert( bv[0] != 0 );
    sc_nassert( bv[0] == bv[1] );
    sc_nassert( SC_LOGIC_1 != bv[1] );

    sc_assert ( bv[0] == '0' );
    sc_nassert( bv[1] == '0' );
    sc_assert ( bv[1] == '1' );
    sc_nassert( bv[0] == '1' );

    sc_nassert( bv[0] != '0' );
    sc_assert ( bv[1] != '0' );
    sc_nassert( bv[1] != '1' );
    sc_assert ( bv[0] != '1' );

    sc_assert ( '0' == bv[0] );
    sc_nassert( '0' == bv[1] );
    sc_assert ( '1' == bv[1] );
    sc_nassert( '1' == bv[0] );

    sc_nassert( '0' != bv[0] );
    sc_assert ( '0' != bv[1] );
    sc_nassert( '1' != bv[1] );
    sc_assert ( '1' != bv[0] );

    sc_nassert( ~bv[0] == '0' );
    sc_assert ( ~bv[1] == '0' );
    sc_nassert( ~bv[1] == '1' );
    sc_assert ( ~bv[0] == '1' );

    sc_assert ( ~bv[0] != '0' );
    sc_nassert( ~bv[1] != '0' );
    sc_assert ( ~bv[1] != '1' );
    sc_nassert( ~bv[0] != '1' );

    sc_nassert( '0' == ~bv[0] );
    sc_assert ( '0' == ~bv[1] );
    sc_nassert( '1' == ~bv[1] );
    sc_assert ( '1' == ~bv[0] );

    sc_assert ( '0' != ~bv[0] );
    sc_nassert( '0' != ~bv[1] );
    sc_assert ( '1' != ~bv[1] );
    sc_nassert( '1' != ~bv[0] );



    sc_assert( bv[0] == lv[0] );
    sc_assert( bv[0] != lv[6] );

    sc_assert( bv.or_reduce() );
    sc_assert( !bv.nor_reduce() );

    sc_assert ( lv[0] == false );
    sc_assert ( lv[5] == SC_LOGIC_Z );
    sc_assert ( lv[6] == SC_LOGIC_X );
    sc_assert ( lv[6].value() == SC_LOGIC_X );

    // sc_assert( ~lv[0] ); // could not convert ... to ‘bool’
    // sc_assert( lv[7] );  // could not convert ... to ‘bool’
    // sc_assert( !lv[0] ); // could not convert ... to ‘bool’

    sc_assert( !lv[0].to_bool() );
    sc_assert( (~lv[0]).to_bool() );

    // with warnings
    sc_assert( lv[5].to_bool() );
    sc_assert( lv[6].to_bool() );
  }

  // bitrefs to subrefs
  {
    /* auto */ sc_subref_r< sc_bv_base > bv_range_r = bv.range(5,1);
    /* auto */ sc_subref_r< sc_lv_base > lv_range_r = lv.range(6,2);

    /* auto */ sc_subref< sc_bv_base >   bv_range   = bv.range(5,1);
    /* auto */ sc_subref< sc_lv_base >   lv_range   = lv.range(6,2);

#if IEEE_1666_CPLUSPLUS >= 201103L
    sc_assert( bv_range[0] );
#endif
    sc_nassert( !bv_range[0] );
    sc_assert( !bv_range[1] );
    sc_assert( (~bv_range[1]).to_bool() );

    sc_assert( bv[1] == bv_range_r[0] );

    bv_range[0] = false;
    sc_assert( !bv[1] );
    sc_assert( bv[1] == bv_range_r[0] );
    sc_assert( bv[1] == bv_range[0] );

    bv_range[0] = SC_LOGIC_1;
#if IEEE_1666_CPLUSPLUS >= 201103L
    sc_assert( bv[1] );
#endif
    sc_assert( bv[1] == bv_range_r[0] );
    sc_assert( bv[1] == bv_range[0] );

    // sc_assert( ~lv_range[0] ); // could not convert ... to ‘bool’
    // sc_assert( lv_range_r[7] );  // could not convert ... to ‘bool’

    sc_assert( !lv_range_r[0].to_bool() );
    sc_assert( lv_range_r[1].to_bool() );
    sc_nassert( (~lv_range[1]).to_bool() );

    // with warnings
    sc_assert( lv_range[3].to_bool() );
    sc_assert( lv_range_r[4].to_bool() );
  }

  // bitrefs to concrefs
  {
    /* auto */ sc_concref< sc_concref<sc_subref<sc_bv_base>, sc_subref<sc_bv_base> >
                         , sc_bitref<sc_bv_base> >
                 bv_range = ( bv.range(7,6) , bv.range(5,1), bv[1] );
    /* auto */ sc_concref_r< sc_concref_r<sc_subref<sc_bv_base>, sc_subref<sc_lv_base> >
                           , sc_bv_base >
      lv_range_r = ( bv.range(7,6) , lv.range(6,2), true );

#if IEEE_1666_CPLUSPLUS >= 201103L
    sc_assert( bv_range[0] );
#endif
    sc_nassert( !bv_range[0] );
    sc_assert( !bv_range[2] );
    // sc_assert( ~bv_range[2] ); // could not convert ... to ‘bool’

    sc_assert( bv[1] == bv_range[0] );

    bv_range[0] = false;
    sc_assert( !bv[1] );
    sc_assert( bv[1] == bv_range[0] );

    bv_range[0] = SC_LOGIC_1;
#if IEEE_1666_CPLUSPLUS >= 201103L
    sc_assert( bv[1] );
#endif
    sc_assert( bv[1] == bv_range[0] );

    // sc_assert( ~lv_range_r[0] ); // could not convert ... to ‘bool’
    // sc_assert( lv_range_r[7] );  // could not convert ... to ‘bool’
    // sc_assert( !lv_range_r[0] ); // could not convert ... to ‘bool’

    sc_assert( lv_range_r[0].to_bool() );
    sc_assert( !lv_range_r[1].to_bool() );
    sc_assert( (~lv_range_r[1]).to_bool() );

    // with warnings
    sc_assert( lv_range_r[4].to_bool() );
    sc_assert( lv_range_r[5].to_bool() );
  }

  return 0;
}