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/* Operation with 128 bit bitmask.
Copyright (C) 2013-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_WIDE_INT_BITMASK_H
#define GCC_WIDE_INT_BITMASK_H
class wide_int_bitmask
{
public:
constexpr wide_int_bitmask ();
constexpr wide_int_bitmask (uint64_t l);
constexpr wide_int_bitmask (uint64_t l, uint64_t h);
inline wide_int_bitmask &operator &= (wide_int_bitmask);
inline wide_int_bitmask &operator |= (wide_int_bitmask);
constexpr wide_int_bitmask operator ~ () const;
constexpr wide_int_bitmask operator & (wide_int_bitmask) const;
constexpr wide_int_bitmask operator | (wide_int_bitmask) const;
inline wide_int_bitmask operator >> (int);
inline wide_int_bitmask operator << (int);
inline bool operator == (wide_int_bitmask) const;
inline bool operator != (wide_int_bitmask) const;
uint64_t low, high;
};
constexpr
wide_int_bitmask::wide_int_bitmask ()
: low (0), high (0)
{
}
constexpr
wide_int_bitmask::wide_int_bitmask (uint64_t l)
: low (l), high (0)
{
}
constexpr
wide_int_bitmask::wide_int_bitmask (uint64_t l, uint64_t h)
: low (l), high (h)
{
}
inline wide_int_bitmask &
wide_int_bitmask::operator &= (wide_int_bitmask b)
{
low &= b.low;
high &= b.high;
return *this;
}
inline wide_int_bitmask &
wide_int_bitmask::operator |= (wide_int_bitmask b)
{
low |= b.low;
high |= b.high;
return *this;
}
constexpr wide_int_bitmask
wide_int_bitmask::operator ~ () const
{
return wide_int_bitmask (~low, ~high);
}
constexpr wide_int_bitmask
wide_int_bitmask::operator | (wide_int_bitmask b) const
{
return wide_int_bitmask (low | b.low, high | b.high);
}
constexpr wide_int_bitmask
wide_int_bitmask::operator & (wide_int_bitmask b) const
{
return wide_int_bitmask (low & b.low, high & b.high);
}
inline wide_int_bitmask
wide_int_bitmask::operator << (int amount)
{
wide_int_bitmask ret;
if (amount >= 64)
{
ret.low = 0;
ret.high = low << (amount - 64);
}
else if (amount == 0)
ret = *this;
else
{
ret.low = low << amount;
ret.high = (low >> (64 - amount)) | (high << amount);
}
return ret;
}
inline wide_int_bitmask
wide_int_bitmask::operator >> (int amount)
{
wide_int_bitmask ret;
if (amount >= 64)
{
ret.low = high >> (amount - 64);
ret.high = 0;
}
else if (amount == 0)
ret = *this;
else
{
ret.low = (high << (64 - amount)) | (low >> amount);
ret.high = high >> amount;
}
return ret;
}
inline bool
wide_int_bitmask::operator == (wide_int_bitmask b) const
{
return low == b.low && high == b.high;
}
inline bool
wide_int_bitmask::operator != (wide_int_bitmask b) const
{
return low != b.low || high != b.high;
}
#endif /* ! GCC_WIDE_INT_BITMASK_H */
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