* benchmark/driver.rb: fix notations.

* benchmark/bm_loop_whileloop.rb: ditto.
* benchmark/bm_loop_whileloop2.rb: ditto.
* benchmark/bm_app_uri.rb: added.
* benchmark/bm_vm1_ivar_set.rb: ditto.
* benchmark/bm_so_binary_trees.rb: added from Computer Language
  Benchmarks Game (http://shootout.alioth.debian.org/).
* benchmark/bm_so_fannkuch.rb: ditto.
* benchmark/bm_so_mandelbrot.rb: ditto.
* benchmark/bm_so_meteor_contest.rb: ditto.
* benchmark/bm_so_nbody.rb: ditto.
* benchmark/bm_so_nsieve.rb: ditto.
* benchmark/bm_so_nsieve_bits.rb: ditto.
* benchmark/bm_so_partial_sums.rb: ditto.
* benchmark/bm_so_pidigits.rb: ditto.
* benchmark/bm_so_spectralnorm.rb: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13548 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 31 insertions, 0 deletions

diff --git a/benchmark/bm_so_partial_sums.rb b/benchmark/bm_so_partial_sums.rb
new file mode 100644
index 0000000000..41f0a5fb87
--- /dev/null
+++ b/benchmark/bm_so_partial_sums.rb
@@ -0,0 +1,31 @@
+n = 2_500_000 # (ARGV.shift || 1).to_i

+

+alt = 1.0 ; s0 = s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = 0.0

+

+1.upto(n) do |d|

+  d = d.to_f ; d2 = d * d ; d3 = d2 * d ; ds = Math.sin(d) ; dc = Math.cos(d)

+

+  s0 += (2.0 / 3.0) ** (d - 1.0)

+  s1 += 1.0 / Math.sqrt(d)

+  s2 += 1.0 / (d * (d + 1.0))

+  s3 += 1.0 / (d3 * ds * ds)

+  s4 += 1.0 / (d3 * dc * dc)

+  s5 += 1.0 / d

+  s6 += 1.0 / d2

+  s7 += alt / d

+  s8 += alt / (2.0 * d - 1.0)

+

+  alt = -alt

+end

+

+if false

+  printf("%.9f\t(2/3)^k\n", s0)

+  printf("%.9f\tk^-0.5\n", s1)

+  printf("%.9f\t1/k(k+1)\n", s2)

+  printf("%.9f\tFlint Hills\n", s3)

+  printf("%.9f\tCookson Hills\n", s4)

+  printf("%.9f\tHarmonic\n", s5)

+  printf("%.9f\tRiemann Zeta\n", s6)

+  printf("%.9f\tAlternating Harmonic\n", s7)

+  printf("%.9f\tGregory\n", s8)

+end