Merge pull request JuliaLang#13678 from tanmaykm/scalaperf

make scala micro benchmark fns similar to others

test/perf/micro/scala/src/main/scala/perf.scala

@@ -50,8 +50,8 @@ object PerfBreeze {
  val t1 = System.nanoTime()
  for(j <- 1 to 1000) {
  rand = generator.nextInt()
- rands = rand.toString
- parsed = rands.toInt
+ rands = if(rand < 0) "-" + abs(rand).toHexString else rand.toHexString
+ parsed = Integer.parseInt(rands, 16)
  }
  val t = System.nanoTime() - t1
  assert(rand == parsed)
@@ -73,14 +73,7 @@ object PerfBreeze {
  }
 
  def mandelperf() = {
- var mandel_sum = 0
- for(re <- -20 to 5) {
- for(im <- -10 to 10) {
- val m = mandel(re/10.0 + i * im/10.0)
- mandel_sum += m
- }
- }
- mandel_sum
+ for(re <- -20 to 5; im <- -10 to 10) yield mandel(re/10.0 + i * im/10.0)
  }
 
  def time_mandel() = {
@@ -91,14 +84,17 @@ object PerfBreeze {
  for(i <- 1 to NITER) {
  val t1 = System.nanoTime()
  for(j <- 1 to 100) {
- mandel_sum = mandelperf()
- mandel_sum2 += mandel_sum
+ val mandel_arr = mandelperf()
+ if(j == 1) {
+ mandel_sum = sum(mandel_arr)
+ mandel_sum2 += mandel_sum
+ }
  }
  val t = System.nanoTime() - t1
  if(t < tmin) tmin = t
  }
  assert(mandel_sum == 14791)
- assert(mandel_sum2 == mandel_sum * 100 * NITER)
+ assert(mandel_sum2 == mandel_sum * NITER)
  tmin / 100.0
  }