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Diffstat (limited to 'ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc')
-rw-r--r-- | ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc b/ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc new file mode 100644 index 000000000..46d347d94 --- /dev/null +++ b/ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc @@ -0,0 +1,163 @@ +/***************************************************************************** + + 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_signed_bitref.h -- Proxy class that is declared in sc_signed.h. + + Original Author: Ali Dasdan, Synopsys, Inc. + + *****************************************************************************/ + +/***************************************************************************** + + MODIFICATION LOG - modifiers, enter your name, affiliation, date and + changes you are making here. + + Name, Affiliation, Date: + Description of Modification: + + *****************************************************************************/ + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signed_bitref_r +// +// Proxy class for sc_signed bit selection (r-value only). +// ---------------------------------------------------------------------------- + +// implicit conversion to uint64 + +sc_signed_bitref_r::operator uint64 () const +{ + return m_obj_p->test( m_index ); +} + +bool +sc_signed_bitref_r::operator ! () const +{ + return ( ! m_obj_p->test( m_index ) ); +} + +bool +sc_signed_bitref_r::operator ~ () const +{ + return ( ! m_obj_p->test( m_index ) ); +} + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signed_bitref +// +// Proxy class for sc_signed bit selection (r-value and l-value). +// ---------------------------------------------------------------------------- + +// assignment operators + +const sc_signed_bitref& +sc_signed_bitref::operator = ( const sc_signed_bitref_r& b ) +{ + m_obj_p->set( m_index, (bool) b ); + return *this; +} + +const sc_signed_bitref& +sc_signed_bitref::operator = ( const sc_signed_bitref& b ) +{ + m_obj_p->set( m_index, (bool) b ); + return *this; +} + +const sc_signed_bitref& +sc_signed_bitref::operator = ( bool b ) +{ + m_obj_p->set( m_index, b ); + return *this; +} + + +const sc_signed_bitref& +sc_signed_bitref::operator &= ( bool b ) +{ + if( ! b ) { + m_obj_p->clear( m_index ); + } + return *this; +} + +const sc_signed_bitref& +sc_signed_bitref::operator |= ( bool b ) +{ + if( b ) { + m_obj_p->set( m_index ); + } + return *this; +} + +const sc_signed_bitref& +sc_signed_bitref::operator ^= ( bool b ) +{ + if( b ) { + m_obj_p->invert( m_index ); + } + return *this; +} + +// #### OPTIMIZE +void sc_signed_bitref::concat_set(int64 src, int low_i) +{ + bool value = 1 & ((low_i < 64) ? (src >> low_i) : (src >> 63)); + m_obj_p->set(low_i, value); +} + +void sc_signed_bitref::concat_set(const sc_signed& src, int low_i) +{ + if ( low_i < src.length() ) + m_obj_p->set(low_i, src.test(low_i)); + else + m_obj_p->set(low_i, src<0); +} + +void sc_signed_bitref::concat_set(const sc_unsigned& src, int low_i) +{ + if ( low_i < src.length() ) + m_obj_p->set(low_i, src.test(low_i)); + else + m_obj_p->set(low_i, 0); +} + +void sc_signed_bitref::concat_set(uint64 src, int low_i) +{ + bool value = 1 & ((low_i < 64) ? (src >> low_i) : 0); + m_obj_p->set(low_i, value); +} + + +// other methods + +void +sc_signed_bitref::scan( ::std::istream& is ) +{ + bool b; + is >> b; + *this = b; +} + + +// End of file |