prelude: |
  rf_1 = 0..1
  rf_1k = 0..1000
  rf_1m = 0..1000000
  big = 2**1000
  rb_1 = big..big+1
  rb_1k = big..big+1000
  rb_1m = big..big+1000000

benchmark:
  "Fixnum 1": rf_1.reverse_each { _1 }
  "Fixnum 1K": rf_1k.reverse_each { _1 }
  "Fixnum 1M": rf_1m.reverse_each { _1 }
  "Bignum 1": rb_1.reverse_each { _1 }
  "Bignum 1K": rb_1k.reverse_each { _1 }
  "Bignum 1M": rb_1m.reverse_each { _1 }