418 inline static constexpr T BitFieldClear(T value, size_t lsb, size_t width) {  in BitFieldClear()  argument
419   DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";  in BitFieldClear()
421   const auto mask = MaskLeastSignificant<T>(width);  in BitFieldClear()
445 inline static constexpr T BitFieldInsert(T value, T2 data, size_t lsb, size_t width) {  in BitFieldInsert()  argument
446   DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";  in BitFieldInsert()
447   if (width != 0u) {  in BitFieldInsert()
448     DCHECK_GE(MaxInt<T2>(width), data) << "Data out of range [too large] for bitwidth";  in BitFieldInsert()
449     DCHECK_LE(MinInt<T2>(width), data) << "Data out of range [too small] for bitwidth";  in BitFieldInsert()
453   const auto data_mask = MaskLeastSignificant<T2>(width);  in BitFieldInsert()
454   const auto value_cleared = BitFieldClear(value, lsb, width);  in BitFieldInsert()
482 inline static constexpr T BitFieldExtract(T value, size_t lsb, size_t width) {  in BitFieldExtract()  argument
483   DCHECK_GE(BitSizeOf(value), lsb + width) << "Bit field out of range for value";  in BitFieldExtract()
487       static_cast<T>((val >> lsb) & MaskLeastSignificant<T>(width));  in BitFieldExtract()
490     if (width == 0) {  // Avoid underflow.  in BitFieldExtract()
492     } else if (bitfield_unsigned & (1 << (width - 1))) {  // Detect if sign bit was set.  in BitFieldExtract()
495       const auto ones_negmask = ~MaskLeastSignificant<T>(width);  in BitFieldExtract()