234   Chunk borrow = 0;  in SubtractBignum()  local
237     DOUBLE_CONVERSION_ASSERT((borrow == 0) || (borrow == 1));  in SubtractBignum()
238     const Chunk difference = RawBigit(i + offset) - other.RawBigit(i) - borrow;  in SubtractBignum()
240     borrow = difference >> (kChunkSize - 1);  in SubtractBignum()
242   while (borrow != 0) {  in SubtractBignum()
243     const Chunk difference = RawBigit(i + offset) - borrow;  in SubtractBignum()
245     borrow = difference >> (kChunkSize - 1);  in SubtractBignum()
703   Chunk borrow = 0;  in PlusCompare()  local
711     if (sum > chunk_c + borrow) {  in PlusCompare()
714       borrow = chunk_c + borrow - sum;  in PlusCompare()
715       if (borrow > 1) {  in PlusCompare()
718       borrow <<= kBigitSize;  in PlusCompare()
721   if (borrow == 0) {  in PlusCompare()
788   Chunk borrow = 0;  in SubtractTimes()  local
792     const DoubleChunk remove = borrow + product;  in SubtractTimes()
795     borrow = static_cast<Chunk>((difference >> (kChunkSize - 1)) +  in SubtractTimes()
799     if (borrow == 0) {  in SubtractTimes()
802     const Chunk difference = RawBigit(i) - borrow;  in SubtractTimes()
804     borrow = difference >> (kChunkSize - 1);  in SubtractTimes()