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author | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-07-10 13:05:29 +0000 |
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committer | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-07-10 13:05:29 +0000 |
commit | a633d484ce58babdf4d64690add54060daa9b675 (patch) | |
tree | 85b1f81c676f3fecdf3c425a94f341f63797eec4 /benchmark/bm_so_partial_sums.rb | |
parent | 4db53b1ae45fb59fd1ae87115de46bc523756ae4 (diff) | |
download | ruby-a633d484ce58babdf4d64690add54060daa9b675.tar.gz |
Revert "benchmark/*.yml: convert from benchmark/bm_*.rb"
This reverts r63900.
Having single-execution benchmark as a normal Ruby script is preferred
by ko1. I'm not a big fan of having inconsistent benchmark formats, but
I can understand some benefits of it.
common.mk: remove obsolsted benchmark-each PHONY declaration, support
running Ruby scripts added by this commit.
README.md: follow ARGS change
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63926 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'benchmark/bm_so_partial_sums.rb')
-rw-r--r-- | benchmark/bm_so_partial_sums.rb | 31 |
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..630b45cb8d --- /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 |