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# Copyright © 2004-2013 Brent Fulgham | ||
# | ||
# All rights reserved. | ||
# | ||
# Redistribution and use in source and binary forms, with or without | ||
# modification, are permitted provided that the following conditions are met: | ||
# | ||
# * Redistributions of source code must retain the above copyright notice, | ||
# this list of conditions and the following disclaimer. | ||
# | ||
# * Redistributions in binary form must reproduce the above copyright notice, | ||
# this list of conditions and the following disclaimer in the documentation | ||
# and/or other materials provided with the distribution. | ||
# | ||
# * Neither the name of "The Computer Language Benchmarks Game" nor the name | ||
# of "The Computer Language Shootout Benchmarks" nor the names of its | ||
# contributors may be used to endorse or promote products derived from this | ||
# software without specific prior written permission. | ||
# | ||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE | ||
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
|
||
# The Computer Language Benchmarks Game | ||
# http://benchmarksgame.alioth.debian.org | ||
# | ||
# contributed by Karl von Laudermann | ||
# modified by Jeremy Echols | ||
# modified by Detlef Reichl | ||
# modified by Joseph LaFata | ||
# modified by Peter Zotov | ||
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# http://benchmarksgame.alioth.debian.org/u64q/program.php?test=mandelbrot&lang=yarv&id=3 | ||
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def mandelbrot(size) | ||
Truffle::Graal.assert_not_compiled | ||
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sum = 0 | ||
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byte_acc = 0 | ||
bit_num = 0 | ||
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y = 0 | ||
while y < size | ||
ci = (2.0*y/size)-1.0 | ||
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x = 0 | ||
while x < size | ||
zrzr = zr = 0.0 | ||
zizi = zi = 0.0 | ||
cr = (2.0*x/size)-1.5 | ||
escape = 0b1 | ||
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z = 0 | ||
while z < 50 | ||
tr = zrzr - zizi + cr | ||
ti = 2.0*zr*zi + ci | ||
zr = tr | ||
zi = ti | ||
# preserve recalculation | ||
zrzr = zr*zr | ||
zizi = zi*zi | ||
if zrzr+zizi > 4.0 | ||
escape = 0b0 | ||
break | ||
end | ||
z += 1 | ||
end | ||
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byte_acc = (byte_acc << 1) | escape | ||
bit_num += 1 | ||
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# Code is very similar for these cases, but using separate blocks | ||
# ensures we skip the shifting when it's unnecessary, which is most cases. | ||
if (bit_num == 8) | ||
#print byte_acc.chr | ||
sum ^= byte_acc | ||
byte_acc = 0 | ||
bit_num = 0 | ||
elsif (x == size - 1) | ||
byte_acc <<= (8 - bit_num) | ||
#print byte_acc.chr | ||
sum ^= byte_acc | ||
byte_acc = 0 | ||
bit_num = 0 | ||
end | ||
x += 1 | ||
end | ||
y += 1 | ||
end | ||
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sum | ||
end | ||
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start = Time.now | ||
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begin | ||
loop do | ||
mandelbrot 750 | ||
end | ||
rescue RubyTruffleError | ||
puts Time.now - start | ||
end |
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