m := NewDRWMutex(ds, "")
	var acc0, acc1 uint64
	b.SetParallelism(4)
	b.RunParallel(func(pb *testing.PB) {
		c := make(chan bool)
		var data [4 << 10]uint64
		for i := 0; pb.Next(); i++ {
			if i%4 == 0 {
				m.Lock(id, source)
				acc0 -= 100
				acc1 += 100
				m.Unlock(b.Context())
			} else {
				for i := 0; i < len(data); i += 4 {

			a.N = atomic.LoadInt64(&old.N)
			e.mu.Lock()
			e.addAll(t-1, a)
			e.mu.Unlock()
			acc = newAcc
		} else {
			// We may be able to grab the new accumulator by yielding.
			runtime.Gosched()
			acc = e.cached.Load()
		}
	}
	atomic.AddInt64(&acc.N, 1)
	atomic.AddInt64(&acc.Total, int64(value))
	atomic.AddInt64(&acc.Size, sz)
}

// total returns the total call count and latency for the last minute.

pkg math/big, func NewFloat(float64) *Float
pkg math/big, func ParseFloat(string, int, uint, RoundingMode) (*Float, int, error)
pkg math/big, method (*Float) Abs(*Float) *Float
pkg math/big, method (*Float) Acc() Accuracy
pkg math/big, method (*Float) Add(*Float, *Float) *Float
pkg math/big, method (*Float) Append([]uint8, uint8, int) []uint8
pkg math/big, method (*Float) Cmp(*Float) int