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require 'benchmark'
require 'ffi'
iter = 100_000
module FFIMath
extend FFI::Library
ffi_lib 'm'
attach_function :cos, [ :double ], :double
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 Math.cos(0) performance, #{iter}x"
10.times {
puts Benchmark.measure {
iter.times { Math.cos(0) }
}
}
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