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object eq extends testing.Benchmark {
def eqtest[T](creator: Int => T, n: Int): Int = {
val elems = Array.tabulate[AnyRef](n)(i => creator(i % 2).asInstanceOf[AnyRef])
var sum = 0
var i = 0
while (i < n) {
var j = 0
while (j < n) {
if (elems(i) eq elems(j)) sum += 1
j += 1
}
i += 1
}
sum
}
val obj1 = new Object
val obj2 = new Object
def run() {
var sum = 0
sum += eqtest(x => if (x == 0) obj1 else obj2, 2000)
sum += eqtest(x => x, 1000)
sum += eqtest(x => x.toChar, 550)
sum += eqtest(x => x.toByte, 550)
sum += eqtest(x => x.toLong, 550)
sum += eqtest(x => x.toShort, 100)
sum += eqtest(x => x.toFloat, 100)
sum += eqtest(x => x.toDouble, 100)
assert(sum == 2958950)
}
}
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