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ffa_ch8_randomism.kv    1 ------------------------------------------------------------------------------
ffa_ch8_randomism.kv    2 ------------------------------------------------------------------------------
ffa_ch8_randomism.kv    3 -- This file is part of 'Finite Field Arithmetic', aka 'FFA'.               --
ffa_ch8_randomism.kv    4 --                                                                          --
ffa_ch8_randomism.kv    5 -- (C) 2017 Stanislav Datskovskiy ( www.loper-os.org )                      --
ffa_ch8_randomism.kv    6 -- http://wot.deedbot.org/17215D118B7239507FAFED98B98228A001ABFFC7.html     --
ffa_ch8_randomism.kv    7 --                                                                          --
ffa_ch8_randomism.kv    8 -- You do not have, nor can you ever acquire the right to use, copy or      --
ffa_ch8_randomism.kv    9 -- distribute this software ; Should you use this software for any purpose, --
ffa_ch8_randomism.kv   10 -- or copy and distribute it to anyone or in any manner, you are breaking   --
ffa_ch8_randomism.kv   11 -- the laws of whatever soi-disant jurisdiction, and you promise to         --
ffa_ch8_randomism.kv   12 -- continue doing so for the indefinite future. In any case, please         --
ffa_ch8_randomism.kv   13 -- always : read and understand any software ; verify any PGP signatures    --
ffa_ch8_randomism.kv   14 -- that you use - for any purpose.                                          --
ffa_ch8_randomism.kv   15 --                                                                          --
ffa_ch8_randomism.kv   16 -- See also http://trilema.com/2015/a-new-software-licensing-paradigm .     --
ffa_ch8_randomism.kv   17 ------------------------------------------------------------------------------
ffa_ch8_randomism.kv   18 ------------------------------------------------------------------------------
ffa_ch8_randomism.kv   19 
ffa_ch8_randomism.kv   20 with OS;       use OS;
ffa_ch8_randomism.kv   21 
ffa_ch8_randomism.kv   22 with FZ_Type;  use FZ_Type;
ffa_ch8_randomism.kv   23 
ffa_ch8_randomism.kv   24 
ffa_ch8_randomism.kv   25 package body FFA_RNG is
ffa_ch8_randomism.kv   26    
ffa_ch8_randomism.kv   27    -- Prepare an RNG for use; at given path, or will use default
ffa_ch8_randomism.kv   28    procedure Init_RNG(RNG           : out RNG_Device;
ffa_ch8_randomism.kv   29                       RNG_Unix_Path : in  String := Default_RNG_Path) is
ffa_ch8_randomism.kv   30    begin
ffa_ch8_randomism.kv   31       begin
ffa_ch8_randomism.kv   32          -- Open the RNG at the offered path:
ffa_ch8_randomism.kv   33          Word_IO.Open(File => RNG.F,
ffa_ch8_randomism.kv   34                       Mode => Word_IO.In_File,
ffa_ch8_randomism.kv   35                       Name => RNG_Unix_Path);
ffa_ch8_randomism.kv   36       exception
ffa_ch8_randomism.kv   37          when others =>
ffa_ch8_randomism.kv   38             Eggog("Could not open RNG at : " & RNG_Unix_Path & "!");
ffa_ch8_randomism.kv   39       end;
ffa_ch8_randomism.kv   40    end Init_RNG;
ffa_ch8_randomism.kv   41    
ffa_ch8_randomism.kv   42    
ffa_ch8_randomism.kv   43    -- Fill a FZ from RNG
ffa_ch8_randomism.kv   44    procedure FZ_Random(RNG : in RNG_Device;
ffa_ch8_randomism.kv   45                        N   : out FZ) is
ffa_ch8_randomism.kv   46    begin
ffa_ch8_randomism.kv   47       begin
ffa_ch8_randomism.kv   48          -- Fill the destination FZ from this RNG:
ffa_ch8_randomism.kv   49          for i in N'Range loop
ffa_ch8_randomism.kv   50             Word_IO.Read(RNG.F, N(i));
ffa_ch8_randomism.kv   51          end loop;
ffa_ch8_randomism.kv   52       exception
ffa_ch8_randomism.kv   53          when others =>
ffa_ch8_randomism.kv   54             Eggog("Could not read from RNG!");
ffa_ch8_randomism.kv   55       end;
ffa_ch8_randomism.kv   56    end FZ_Random;
ffa_ch8_randomism.kv   57    
ffa_ch8_randomism.kv   58 end FFA_RNG;