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require 'timeout'
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require 'bigdecimal'
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$VERBOSE = nil
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M = 5
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TIMEOUT = 1.0
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def measure(proc)
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(1..M).map do
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n = 0
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Timeout.timeout(TIMEOUT) do
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loop do
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proc.()
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n += 1
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end
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end rescue nil
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n
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end.max
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end
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r = Rational(1, 3)
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b1, b2 = (1 << 64) + 1, (1 << 64) + 3
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r2 = Rational(b1)
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r3 = -r
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f, f2 = 10.0, -3.14
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i = 10
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bd = BigDecimal('0.1')
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[
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['Integer#gcd', ->{b1.gcd(b2)}],
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['+', ->{r + r}],
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['+ huge rational', ->{r + r2}],
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['+ float', ->{r + f}],
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['+ fixnum', ->{r + i}],
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['+ bignum', ->{r + b1}],
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['-', ->{r - r}],
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['- huge rational', ->{r - r2}],
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['- float', ->{r - f}],
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['- fixnum', ->{r - i}],
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['- bignum', ->{r - b1}],
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['*', ->{r * r}],
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['* huge rational', ->{r * r2}],
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['* float', ->{r * f}],
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['* fixnum', ->{r * i}],
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['* bignum', ->{r * b1}],
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['/', ->{r / r}],
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['/ float', ->{r / f}],
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['/ huge rational', ->{r / r2}],
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['/ fixnum', ->{r / i}],
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['/ bignum', ->{r / b1}],
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['fdiv(0)', ->{r.fdiv(0)}],
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['fdiv(1)', ->{r.fdiv(1)}],
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['fdiv(2)', ->{r.fdiv(2)}],
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['** fixnum', ->{r ** i}],
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['** bignum', ->{r ** b1}],
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['** float', ->{r ** f}],
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['<=>', ->{r <=> r}],
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['<=> float', ->{r <=> f}],
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['<=> fixnum', ->{r <=> i}],
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['ctor with bignum', ->{Rational(1, b1)}],
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['ctor', ->{Rational(1, 3)}],
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['==', ->{r == r2}],
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['== bignum', ->{r2 == b1}],
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['coerce(float)', ->{r.coerce(f)}],
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['floor', ->{r.floor}],
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['ceil', ->{r.ceil}],
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['round', ->{r.round}],
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['to_i', ->{r.to_i}],
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['to_f', ->{r.to_f}],
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['floor(n)', ->{r.floor(1)}],
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['ceil(n)', ->{r.ceil(1)}],
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['round(n)', ->{r.round(1)}],
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['truncate(n)', ->{r.truncate(1)}],
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['Numeric#numerator', ->{bd.numerator}],
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['Numeric#denominator', ->{bd.denominator}],
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['Numeric#quo(integer)', ->{2.quo(3)}],
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['Float#numerator', ->{f.numerator}],
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['Float#denominator', ->{f.denominator}],
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['Float#to_r', ->{f.to_r}],
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['Float#to_r (0.1)', ->{0.1.to_r}],
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['1.0.rationalize', ->{1.0.rationalize}],
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['-1.0.rationalize', ->{-1.0.rationalize}],
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['10.0.rationalize(0.0)', ->{f.rationalize(0.0)}],
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['0.0.rationalize', ->{0.0.rationalize}],
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['10.0.rationalize', ->{f.rationalize}],
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['-3.14.rationalize', ->{f2.rationalize}],
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['Rational(\'1\')', ->{Rational('1')}],
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['Rational(\'3.141592\')', ->{Rational('3.141592')}],
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['Rational(\'-1e-10\')', ->{Rational('-1e-10')}],
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['negative?', ->{r.negative?}],
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['-rational.rationalize(some)', ->{r3.rationalize(r)}],
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['Integer#lcm', ->{3.lcm(7)}],
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['-@', ->{-r}],
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].each do |label, proc|
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puts label + "\t%d" % measure(proc)
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STDOUT.flush
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end
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