func BenchmarkCMWC32Next(b *testing.B) {
b.StopTimer()
c := core.MakeCMWC32(3278470471, 4)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Next()
}
}
func CMWCSpec(c gospec.Context) {
c.Specify("CMWC32 produces the same output as SlowCMWC.", func() {
fast := core.MakeCMWC32(11, 4)
slow := core.MakeSlowCMWC(11, 1<<32, 1<<4)
N := 100000
for i := 0; i < N; i++ {
f := fast.Next()
s := slow.Next()
c.Expect(f, Equals, s)
if f != s {
break
}
}
})
}
// Creates a Cmwc RNG with a very long period
func MakeGoodCmwc() *Cmwc {
return &Cmwc{core.MakeCMWC32(3945340957, 5)}
}
// Creates a Cmwc RNG with (A, B, R) = (a, 2^32, 1<<lb2_r)
func MakeCmwc(a, lb2_r uint32) *Cmwc {
return &Cmwc{core.MakeCMWC32(a, lb2_r)}
}