# Ruby integers have arbitrary precision.
# This means they can grow as large as needed, limited only by memory.
#
# A petabyte fits easily:
#
# 1 PiB = 2**50 = 1,125,899,906,842,624 bytes
# 1 PB = 10**15 = 1,000,000,000,000,000 bytes
#
# Ruby constants are simply variables with uppercase names.
# Binary petabyte (pebibyte), using a bit shift.
# 1 << 50 = 2**50 bytes.
PETABYTE_PIB = 1 << 50 # not a constant - just don't change it
# Decimal petabyte (SI petabyte), using a readable numeric literal.
PETABYTE_PB = 1_000_000_000_000_000
puts "1 PiB = #{PETABYTE_PIB} bytes"
puts "1 PB = #{PETABYTE_PB} bytes"
# run:
#
# 1 PiB = 1125899906842624 bytes
# 1 PB = 1000000000000000 bytes
#
