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Diffstat (limited to 'ext/systemc/src/sysc/datatypes/bit/sc_logic.cpp')
| -rw-r--r-- | ext/systemc/src/sysc/datatypes/bit/sc_logic.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/datatypes/bit/sc_logic.cpp b/ext/systemc/src/sysc/datatypes/bit/sc_logic.cpp new file mode 100644 index 000000000..15525f5c5 --- /dev/null +++ b/ext/systemc/src/sysc/datatypes/bit/sc_logic.cpp @@ -0,0 +1,175 @@ +/***************************************************************************** + + 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. + + *****************************************************************************/ + +/***************************************************************************** + + 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 |