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author | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-07-10 13:08:40 +0000 |
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committer | k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-07-10 13:08:40 +0000 |
commit | 433af16167aec949c6345ad41b78b17c440b4a6d (patch) | |
tree | 42b9a14817cccef4a57177329381f97a7a2ac75c /benchmark/bm_so_spectralnorm.rb | |
parent | f992f4251874a025de09ffecf0f2b8cb984f2201 (diff) | |
download | ruby-433af16167aec949c6345ad41b78b17c440b4a6d.tar.gz |
benchmark: drop all bm_ prefix for legacy driver.rb
benchmark/*.rb is only benchmarks now. We don't need prefixes.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'benchmark/bm_so_spectralnorm.rb')
-rw-r--r-- | benchmark/bm_so_spectralnorm.rb | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/benchmark/bm_so_spectralnorm.rb b/benchmark/bm_so_spectralnorm.rb deleted file mode 100644 index 6b97206689..0000000000 --- a/benchmark/bm_so_spectralnorm.rb +++ /dev/null @@ -1,50 +0,0 @@ -# The Computer Language Shootout -# http://shootout.alioth.debian.org/ -# Contributed by Sokolov Yura - -def eval_A(i,j) - return 1.0/((i+j)*(i+j+1)/2+i+1) -end - -def eval_A_times_u(u) - v, i = nil, nil - (0..u.length-1).collect { |i| - v = 0 - for j in 0..u.length-1 - v += eval_A(i,j)*u[j] - end - v - } -end - -def eval_At_times_u(u) - v, i = nil, nil - (0..u.length-1).collect{|i| - v = 0 - for j in 0..u.length-1 - v += eval_A(j,i)*u[j] - end - v - } -end - -def eval_AtA_times_u(u) - return eval_At_times_u(eval_A_times_u(u)) -end - -n = 500 # ARGV[0].to_i - -u=[1]*n -for i in 1..10 - v=eval_AtA_times_u(u) - u=eval_AtA_times_u(v) -end -vBv=0 -vv=0 -for i in 0..n-1 - vBv += u[i]*v[i] - vv += v[i]*v[i] -end - -str = "%0.9f" % (Math.sqrt(vBv/vv)), "\n" -# print str |