Ruby module to turn a number into a string appended with binary units such as MiB, GiB as explained in (https://en.wikipedia.org/wiki/Binary_prefix) and to turn number into string appended with si prefixes.
Gem
gem install anthroposi
Git
git clone https://github.com/kzw/anthroposi
cd anthroposi
make
require 'anthroposi'
puts human_size(2900)
This outputs 2.83KiB
The behavior of this module is documented in the tests. make test will trigger a run. An
example output is
anthroposi me$ make test
rspec -I lib tests && touch test
significant digits
gives 0 if rounding 0 into 0 significant digits
gives 2 if rounding 2 into 1 significant digits
gives 3.1 if rounding 3.14159 into 2 significant digits
gives 1000 if rounding 1234 into 1 significant digits
gives 120000 if rounding 116067 into 2 significant digits
gives 0.0076 if rounding 0.0075542144 into 2 significant digits
gives -800000 if rounding -839800.0 into 1 significant digits
gives 0 if rounding 888 into 0 significant digits
gives 900 if rounding 888 into 1 significant digits
gives 500000 if rounding 498989 into 1 significant digits
gives -40000000 if rounding -44689898.088 into 1 significant digits
gives 0 if rounding 489189 into 0 significant digits
gives 0 if rounding 0 into 3 significant digits
human units
turns 0 bytes into 0B binary unit
turns 2 bytes into 2.0B binary unit
turns 1234 bytes into 1.21KiB binary unit
turns 1180591620717411303424 bytes into 1.0ZiB binary unit
turns 1000000000000000000000 bytes into 867EiB binary unit
turns 5960000 bytes into 5.68MiB binary unit
turns 7000000000 bytes into 6.52GiB binary unit
turns 756200000000 bytes into 704GiB binary unit
turns 7000000000000 bytes into 6.37TiB binary unit
turns 9111000000000000 bytes into 8.09PiB binary unit
turns 19999111000000000000 bytes into 17.3EiB binary unit
turns 2245999111000000000000 bytes into 1.9ZiB binary unit
turns 42342239999111000000000000 bytes into 35.0YiB binary unit
turns 67111567239779111990060009003 bytes into 5.55e+04YiB binary unit
turns 0 into 0 with SI prefix
turns 2 into 2.0 with SI prefix
turns 1234 into 1.23K with SI prefix
turns 1180591620717411303424 into 1.18Z with SI prefix
turns 1000000000000000000000 into 1.0Z with SI prefix
turns 5960000 into 5.96M with SI prefix
turns 7000000000 into 7.0G with SI prefix
turns 756200000000 into 756G with SI prefix
turns 7000000000000 into 7.0T with SI prefix
turns 9111000000000000 into 9.11P with SI prefix
turns 19999111000000000000 into 20.0E with SI prefix
turns 2245999111000000000000 into 2.25Z with SI prefix
turns 42342239999111000000000000 into 42.3Y with SI prefix
turns 67111567239779111990060009003 into 6.71e+04Y with SI prefix
does not handle string
does not handle fractional number
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43 examples, 0 failures
Research into existing works point to similar api available in rail , possibly also in active state, and in other gems