61     bool TestBit(size_t offset) const  in TestBit()  argument
64             return data_.inlineWord_ & Mask(offset);  in TestBit()
66             ASSERT(wordCount_ > Index(offset));  in TestBit()
67             return data_.words_[Index(offset)] & Mask(IndexInWord(offset));  in TestBit()
71     void SetBit(size_t offset)  in SetBit()  argument
74             data_.inlineWord_ |= Mask(offset);  in SetBit()
76             ASSERT(wordCount_ > Index(offset));  in SetBit()
77             data_.words_[Index(offset)] |= Mask(IndexInWord(offset));  in SetBit()
81     void ClearBit(size_t offset)  in ClearBit()  argument
84             data_.inlineWord_ &= ~Mask(offset);  in ClearBit()
86             ASSERT(wordCount_ > Index(offset));  in ClearBit()
87             data_.words_[Index(offset)] &= ~Mask(IndexInWord(offset));  in ClearBit()
185     size_t IndexInWord(size_t offset) const  in IndexInWord()  argument
187         return offset & BIT_PER_WORD_MASK;  in IndexInWord()
190     size_t Index(size_t offset) const  in Index()  argument
192         return offset >> BIT_PER_WORD_LOG2;  in Index()