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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
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distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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*****************************************************************************/
/*****************************************************************************
sc_unsigned_bitref.h -- Proxy class that is declared in sc_unsigned.h.
Original Author: Ali Dasdan, Synopsys, Inc.
*****************************************************************************/
/*****************************************************************************
MODIFICATION LOG - modifiers, enter your name, affiliation, date and
changes you are making here.
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Description of Modification:
*****************************************************************************/
// ----------------------------------------------------------------------------
// CLASS : sc_unsigned_bitref_r
//
// Proxy class for sc_unsigned bit selection (r-value only).
// ----------------------------------------------------------------------------
// implicit conversion to uint64
sc_unsigned_bitref_r::operator uint64 () const
{
return m_obj_p->test(m_index);
}
bool
sc_unsigned_bitref_r::operator ! () const
{
return (!m_obj_p->test(m_index));
}
bool
sc_unsigned_bitref_r::operator ~ () const
{
return (!m_obj_p->test(m_index));
}
// ----------------------------------------------------------------------------
// CLASS : sc_unsigned_bitref
//
// Proxy class for sc_unsigned bit selection (r-value and l-value).
// ----------------------------------------------------------------------------
// assignment operators
const sc_unsigned_bitref &
sc_unsigned_bitref::operator = (const sc_unsigned_bitref_r &b)
{
m_obj_p->set(m_index, (bool)b);
return *this;
}
const sc_unsigned_bitref &
sc_unsigned_bitref::operator = (const sc_unsigned_bitref &b)
{
m_obj_p->set(m_index, (bool)b);
return *this;
}
const sc_unsigned_bitref &
sc_unsigned_bitref::operator = (bool b)
{
m_obj_p->set(m_index, b);
return *this;
}
const sc_unsigned_bitref &
sc_unsigned_bitref::operator &= (bool b)
{
if (!b) {
m_obj_p->clear(m_index);
}
return *this;
}
const sc_unsigned_bitref &
sc_unsigned_bitref::operator |= (bool b)
{
if (b) {
m_obj_p->set(m_index);
}
return *this;
}
const sc_unsigned_bitref &
sc_unsigned_bitref::operator ^= (bool b)
{
if (b) {
m_obj_p->invert(m_index);
}
return *this;
}
// #### OPTIMIZE
void
sc_unsigned_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_unsigned_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_unsigned_bitref::concat_set(const sc_unsigned &src, int low_i)
{
if (low_i < src.nbits)
m_obj_p->set(low_i, src.test(low_i));
else
m_obj_p->set(low_i, 0);
}
void
sc_unsigned_bitref::concat_set(uint64 src, int low_i)
{
bool value = ((low_i < 64) ? (src >> low_i) & 1 : 0);
m_obj_p->set(low_i, value);
}
// other methods
void
sc_unsigned_bitref::scan(::std::istream &is)
{
bool b;
is >> b;
*this = b;
}