sc_signed_bitref.inc revision 12027
1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 sc_signed_bitref.h -- Proxy class that is declared in sc_signed.h. 23 24 Original Author: Ali Dasdan, Synopsys, Inc. 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 Name, Affiliation, Date: 34 Description of Modification: 35 36 *****************************************************************************/ 37 38 39// ---------------------------------------------------------------------------- 40// CLASS : sc_signed_bitref_r 41// 42// Proxy class for sc_signed bit selection (r-value only). 43// ---------------------------------------------------------------------------- 44 45// implicit conversion to uint64 46 47sc_signed_bitref_r::operator uint64 () const 48{ 49 return m_obj_p->test( m_index ); 50} 51 52bool 53sc_signed_bitref_r::operator ! () const 54{ 55 return ( ! m_obj_p->test( m_index ) ); 56} 57 58bool 59sc_signed_bitref_r::operator ~ () const 60{ 61 return ( ! m_obj_p->test( m_index ) ); 62} 63 64 65// ---------------------------------------------------------------------------- 66// CLASS : sc_signed_bitref 67// 68// Proxy class for sc_signed bit selection (r-value and l-value). 69// ---------------------------------------------------------------------------- 70 71// assignment operators 72 73const sc_signed_bitref& 74sc_signed_bitref::operator = ( const sc_signed_bitref_r& b ) 75{ 76 m_obj_p->set( m_index, (bool) b ); 77 return *this; 78} 79 80const sc_signed_bitref& 81sc_signed_bitref::operator = ( const sc_signed_bitref& b ) 82{ 83 m_obj_p->set( m_index, (bool) b ); 84 return *this; 85} 86 87const sc_signed_bitref& 88sc_signed_bitref::operator = ( bool b ) 89{ 90 m_obj_p->set( m_index, b ); 91 return *this; 92} 93 94 95const sc_signed_bitref& 96sc_signed_bitref::operator &= ( bool b ) 97{ 98 if( ! b ) { 99 m_obj_p->clear( m_index ); 100 } 101 return *this; 102} 103 104const sc_signed_bitref& 105sc_signed_bitref::operator |= ( bool b ) 106{ 107 if( b ) { 108 m_obj_p->set( m_index ); 109 } 110 return *this; 111} 112 113const sc_signed_bitref& 114sc_signed_bitref::operator ^= ( bool b ) 115{ 116 if( b ) { 117 m_obj_p->invert( m_index ); 118 } 119 return *this; 120} 121 122// #### OPTIMIZE 123void sc_signed_bitref::concat_set(int64 src, int low_i) 124{ 125 bool value = 1 & ((low_i < 64) ? (src >> low_i) : (src >> 63)); 126 m_obj_p->set(low_i, value); 127} 128 129void sc_signed_bitref::concat_set(const sc_signed& src, int low_i) 130{ 131 if ( low_i < src.length() ) 132 m_obj_p->set(low_i, src.test(low_i)); 133 else 134 m_obj_p->set(low_i, src<0); 135} 136 137void sc_signed_bitref::concat_set(const sc_unsigned& src, int low_i) 138{ 139 if ( low_i < src.length() ) 140 m_obj_p->set(low_i, src.test(low_i)); 141 else 142 m_obj_p->set(low_i, 0); 143} 144 145void sc_signed_bitref::concat_set(uint64 src, int low_i) 146{ 147 bool value = 1 & ((low_i < 64) ? (src >> low_i) : 0); 148 m_obj_p->set(low_i, value); 149} 150 151 152// other methods 153 154void 155sc_signed_bitref::scan( ::std::istream& is ) 156{ 157 bool b; 158 is >> b; 159 *this = b; 160} 161 162 163// End of file 164