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Diffstat (limited to 'benchmark/so_nsieve_bits.yml')
| -rw-r--r-- | benchmark/so_nsieve_bits.yml | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/benchmark/so_nsieve_bits.yml b/benchmark/so_nsieve_bits.yml deleted file mode 100644 index 08b47f53bb..0000000000 --- a/benchmark/so_nsieve_bits.yml +++ /dev/null @@ -1,46 +0,0 @@ -prelude: | - #!/usr/bin/ruby - #coding: us-ascii -benchmark: - so_nsieve_bits: | - # - # The Great Computer Language Shootout - # http://shootout.alioth.debian.org/ - # - # nsieve-bits in Ruby - # Contributed by Glenn Parker, March 2005 - - CharExponent = 3 - BitsPerChar = 1 << CharExponent - LowMask = BitsPerChar - 1 - - def sieve(m) - items = "\xFF" * ((m / BitsPerChar) + 1) - masks = "" - BitsPerChar.times do |b| - masks << (1 << b).chr - end - - count = 0 - pmax = m - 1 - 2.step(pmax, 1) do |p| - if items[p >> CharExponent][p & LowMask] == 1 - count += 1 - p.step(pmax, p) do |mult| - a = mult >> CharExponent - b = mult & LowMask - items[a] -= masks[b] if items[a][b] != 0 - end - end - end - count - end - - n = 9 # (ARGV[0] || 2).to_i - n.step(n - 2, -1) do |exponent| - break if exponent < 0 - m = 2 ** exponent * 10_000 - count = sieve(m) - printf "Primes up to %8d %8d\n", m, count - end -loop_count: 1 |