134   // any of the operands is negative. Here we try to enforce C++11's "rounded  in RoundTowardZero()
207   bool negative = (value[0] == '-');  in FromString()  local
208   int sign_length = (negative ? 1 : 0);  in FromString()
230   if (negative) {  in FromString()
231     // If a Duration is negative, both seconds and nanos should be negative.  in FromString()
382 void ToUint128(const Duration& value, uint128* result, bool* negative) {  in ToUint128()  argument
384     *negative = true;  in ToUint128()
388     *negative = false;  in ToUint128()
394 void ToDuration(const uint128& value, bool negative, Duration* duration) {  in ToDuration()  argument
398   if (negative) {  in ToDuration()
420   bool negative;  in operator *=()  local
422   ToUint128(d, &value, &negative);  in operator *=()
426     negative = !negative;  in operator *=()
429   ToDuration(value, negative, &d);  in operator *=()
446   bool negative;  in operator /=()  local
448   ToUint128(d, &value, &negative);  in operator /=()
452     negative = !negative;  in operator /=()
455   ToDuration(value, negative, &d);  in operator /=()
469   // When negative values are involved in division, we round the division  in operator %=()