func BenchmarkXorshift(b *testing.B) {
r := xorshift.NewXorShift64Star(0x0ddc0ffeebadf00d)
b.ResetTimer()
for i := 0; i < b.N; i++ {
total += uint32(r.Next())
}
}
package pmc
import (
"errors"
"fmt"
"math"
"strconv"
"code.google.com/p/gofarmhash"
"github.com/lazybeaver/xorshift"
"github.com/lukut/bitmaps"
)
var xor64s = xorshift.NewXorShift64Star(42)
// non-receiver methods
func georand(w uint) uint {
val := uint(xor64s.Next())
// Calculate the position of the leftmost 1-bit.
for r := uint(0); r < w-1; r++ {
if val&0x8000000000000000 != 0 {
return r
}
val <<= 1
}
return w
}
func rand(m uint) uint {