73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BLI_bit_span.hh"
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namespace blender::bits {
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void MutableBitSpan::set_all()
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{
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if (bit_range_.is_empty()) {
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return;
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}
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const AlignedIndexRanges ranges = split_index_range_by_alignment(bit_range_, BitsPerInt);
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{
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BitInt &first_int = *int_containing_bit(data_, bit_range_.start());
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const BitInt first_int_mask = mask_range_bits(ranges.prefix.start() & BitIndexMask,
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ranges.prefix.size());
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first_int |= first_int_mask;
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}
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{
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BitInt *start = int_containing_bit(data_, ranges.aligned.start());
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const int64_t ints_to_fill = ranges.aligned.size() / BitsPerInt;
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constexpr BitInt fill_value = BitInt(-1);
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initialized_fill_n(start, ints_to_fill, fill_value);
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}
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{
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BitInt &last_int = *int_containing_bit(data_, bit_range_.one_after_last() - 1);
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const BitInt last_int_mask = mask_first_n_bits(ranges.suffix.size());
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last_int |= last_int_mask;
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}
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}
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void MutableBitSpan::reset_all()
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{
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if (bit_range_.is_empty()) {
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return;
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}
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const AlignedIndexRanges ranges = split_index_range_by_alignment(bit_range_, BitsPerInt);
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{
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BitInt &first_int = *int_containing_bit(data_, bit_range_.start());
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const BitInt first_int_mask = mask_range_bits(ranges.prefix.start() & BitIndexMask,
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ranges.prefix.size());
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first_int &= ~first_int_mask;
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}
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{
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BitInt *start = int_containing_bit(data_, ranges.aligned.start());
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const int64_t ints_to_fill = ranges.aligned.size() / BitsPerInt;
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constexpr BitInt fill_value = 0;
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initialized_fill_n(start, ints_to_fill, fill_value);
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}
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{
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BitInt &last_int = *int_containing_bit(data_, bit_range_.one_after_last() - 1);
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const BitInt last_int_mask = mask_first_n_bits(ranges.suffix.size());
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last_int &= ~last_int_mask;
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}
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}
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std::ostream &operator<<(std::ostream &stream, const BitSpan &span)
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{
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stream << "(Size: " << span.size() << ", ";
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for (const BitRef bit : span) {
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stream << bit;
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}
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stream << ")";
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return stream;
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}
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std::ostream &operator<<(std::ostream &stream, const MutableBitSpan &span)
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{
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return stream << BitSpan(span);
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}
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} // namespace blender::bits
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