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require File.expand_path(File.join(File.dirname(__FILE__), "bench_helper"))
module FFIMath
extend FFI::Library
ffi_lib 'm'
attach_function :cos, [ :double ], :double
attach_function :cosf, [ :float ], :float
end
if FFIMath.cos(0) != 1
raise ArgumentError, "FFI.cos returned incorrect value"
end
puts "Benchmark FFI cos(0) performance, #{ITER}x"
10.times {
puts Benchmark.measure {
ITER.times { FFIMath.cos(0) }
}
}
puts "Benchmark FFI cosf(0) performance, #{ITER}x"
10.times {
puts Benchmark.measure {
ITER.times { FFIMath.cosf(0) }
}
}
puts "Benchmark Math.cos(0) performance, #{ITER}x"
10.times {
puts Benchmark.measure {
ITER.times { Math.cos(0) }
}
}
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