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| 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 |
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| http://www.apache.org/licenses/LICENSE-2.0 |
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| 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 |
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| *****************************************************************************/ |
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| /***************************************************************************** |
| |
| sc_logic.cpp -- C++ implementation of logic type. Behaves |
| pretty much the same way as HDLs logic type. |
| |
| Original Author: Stan Y. Liao, Synopsys, Inc. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| |
| // $Log: sc_logic.cpp,v $ |
| // Revision 1.1.1.1 2006/12/15 20:20:04 acg |
| // SystemC 2.3 |
| // |
| // Revision 1.3 2006/01/13 18:53:53 acg |
| // Andy Goodrich: added $Log command so that CVS comments are reproduced in |
| // the source. |
| // |
| |
| #include "sysc/datatypes/bit/sc_bit_ids.h" |
| #include "sysc/datatypes/bit/sc_logic.h" |
| |
| |
| namespace sc_dt |
| { |
| |
| // ---------------------------------------------------------------------------- |
| // CLASS : sc_logic |
| // |
| // Four-valued logic type. |
| // ---------------------------------------------------------------------------- |
| |
| // support methods |
| |
| void |
| sc_logic::invalid_value( sc_logic_value_t v ) |
| { |
| char msg[BUFSIZ]; |
| std::sprintf( msg, "sc_logic( %d )", v ); |
| SC_REPORT_ERROR( sc_core::SC_ID_VALUE_NOT_VALID_, msg ); |
| } |
| |
| void |
| sc_logic::invalid_value( char c ) |
| { |
| char msg[BUFSIZ]; |
| std::sprintf( msg, "sc_logic( '%c' )", c ); |
| SC_REPORT_ERROR( sc_core::SC_ID_VALUE_NOT_VALID_, msg ); |
| } |
| |
| void |
| sc_logic::invalid_value( int i ) |
| { |
| char msg[BUFSIZ]; |
| std::sprintf( msg, "sc_logic( %d )", i ); |
| SC_REPORT_ERROR( sc_core::SC_ID_VALUE_NOT_VALID_, msg ); |
| } |
| |
| |
| void |
| sc_logic::invalid_01() const |
| { |
| if( (int) m_val == Log_Z ) { |
| SC_REPORT_WARNING( sc_core::SC_ID_LOGIC_Z_TO_BOOL_, 0 ); |
| } else { |
| SC_REPORT_WARNING( sc_core::SC_ID_LOGIC_X_TO_BOOL_, 0 ); |
| } |
| } |
| |
| |
| // conversion tables |
| |
| const sc_logic_value_t sc_logic::char_to_logic[128] = |
| { |
| Log_0, Log_1, Log_Z, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_0, Log_1, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_Z, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, Log_X, |
| Log_X, Log_X, Log_Z, Log_X, Log_X, Log_X, Log_X, Log_X |
| }; |
| |
| const char sc_logic::logic_to_char[4] = { '0', '1', 'Z', 'X' }; |
| |
| const sc_logic_value_t sc_logic::and_table[4][4] = |
| { |
| { Log_0, Log_0, Log_0, Log_0 }, |
| { Log_0, Log_1, Log_X, Log_X }, |
| { Log_0, Log_X, Log_X, Log_X }, |
| { Log_0, Log_X, Log_X, Log_X } |
| }; |
| |
| const sc_logic_value_t sc_logic::or_table[4][4] = |
| { |
| { Log_0, Log_1, Log_X, Log_X }, |
| { Log_1, Log_1, Log_1, Log_1 }, |
| { Log_X, Log_1, Log_X, Log_X }, |
| { Log_X, Log_1, Log_X, Log_X } |
| }; |
| |
| const sc_logic_value_t sc_logic::xor_table[4][4] = |
| { |
| { Log_0, Log_1, Log_X, Log_X }, |
| { Log_1, Log_0, Log_X, Log_X }, |
| { Log_X, Log_X, Log_X, Log_X }, |
| { Log_X, Log_X, Log_X, Log_X } |
| }; |
| |
| const sc_logic_value_t sc_logic::not_table[4] = |
| { Log_1, Log_0, Log_X, Log_X }; |
| |
| |
| // other methods |
| |
| void |
| sc_logic::scan( ::std::istream& is ) |
| { |
| char c; |
| is >> c; |
| *this = c; |
| } |
| |
| |
| // #ifdef SC_DT_DEPRECATED |
| const sc_logic sc_logic_0( Log_0 ); |
| const sc_logic sc_logic_1( Log_1 ); |
| const sc_logic sc_logic_Z( Log_Z ); |
| const sc_logic sc_logic_X( Log_X ); |
| // #endif |
| |
| const sc_logic SC_LOGIC_0( Log_0 ); |
| const sc_logic SC_LOGIC_1( Log_1 ); |
| const sc_logic SC_LOGIC_Z( Log_Z ); |
| const sc_logic SC_LOGIC_X( Log_X ); |
| |
| } // namespace sc_dt |