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Current File : /proc/self/root/opt/cpanel/ea-ruby24/root/usr/share/ri/system/Random/Formatter/uuid-i.ri
U:RDoc::AnyMethod[iI"	uuid:EFI"Random::Formatter#uuid;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Verbatim;	[1I"=# SecureRandom.random_number generates a random number.
;TI"#
;TI".# If a positive integer is given as _n_,
;TI"C# +SecureRandom.random_number+ returns an integer, such that:
;TI"1# +0 <= SecureRandom.random_number(n) < n+.
;TI"#
;TI"2#   p SecureRandom.random_number(100) #=> 15
;TI"2#   p SecureRandom.random_number(100) #=> 88
;TI"#
;TI"2# If 0 is given or an argument is not given,
;TI"@# +SecureRandom.random_number+ returns a float, such that:
;TI"4# +0.0 <= SecureRandom.random_number() < 1.0+.
;TI"#
;TI"<#   p SecureRandom.random_number #=> 0.596506046187744
;TI"<#   p SecureRandom.random_number #=> 0.350621695741409
;TI"#
;TI"def random_number(n=0)
;TI"  if 0 < n
;TI"!    if defined? OpenSSL::BN
;TI"*      OpenSSL::BN.rand_range(n).to_i
;TI"    else
;TI"      hex = n.to_s(16)
;TI"4      hex = '0' + hex if (hex.length & 1) == 1
;TI""      bin = [hex].pack("H*")
;TI"      mask = bin[0].ord
;TI"      mask |= mask >> 1
;TI"      mask |= mask >> 2
;TI"      mask |= mask >> 4
;TI"      begin
;TI",        rnd = random_bytes(bin.length)
;TI".        rnd[0] = (rnd[0].ord & mask).chr
;TI"      end until rnd < bin
;TI"#      rnd.unpack("H*")[0].hex
;TI"
    end
;TI"  else
;TI"-    # assumption: Float::MANT_DIG <= 64
;TI"!    if defined? OpenSSL::BN
;TI"/      i64 = OpenSSL::BN.rand(64, -1).to_i
;TI"    else
;TI"0      i64 = random_bytes(8).unpack("Q")[0]
;TI"
    end
;TI"C    Math.ldexp(i64 >> (64-Float::MANT_DIG), -Float::MANT_DIG)
;TI"  end
;TI"	end
;T:@format0o:RDoc::Markup::Paragraph;	[I"U# SecureRandom.uuid generates a random v4 UUID (Universally Unique IDentifier). ;TI"# ;TI"H#   p SecureRandom.uuid #=> "2d931510-d99f-494a-8c67-87feb05e1594" ;TI"H#   p SecureRandom.uuid #=> "bad85eb9-0713-4da7-8d36-07a8e4b00eab" ;TI"H#   p SecureRandom.uuid #=> "62936e70-1815-439b-bf89-8492855a7e6b" ;TI"# ;TI"A# The version 4 UUID is purely random (except the version). ;TI"Y# It doesn't contain meaningful information such as MAC addresses, timestamps, etc. ;TI"# ;TI"A# The result contains 122 random bits (15.25 random bytes). ;TI"# ;TI")# See RFC 4122 for details of UUID. ;TI"#;T:
@fileI"lib/securerandom.rb;T:0@omit_headings_from_table_of_contents_below000[I"();T@HFI"Formatter;FcRDoc::NormalModule00

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