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diff --git a/ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc b/ext/systemc/src/sysc/datatypes/int/sc_signed_bitref.inc
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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
+
+ 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