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ffa_ch5_egypt.kv        1 ------------------------------------------------------------------------------
ffa_ch5_egypt.kv        2 ------------------------------------------------------------------------------
ffa_ch5_egypt.kv        3 -- This file is part of 'Finite Field Arithmetic', aka 'FFA'.               --
ffa_ch5_egypt.kv        4 --                                                                          --
ffa_ch5_egypt.kv        5 -- (C) 2017 Stanislav Datskovskiy ( www.loper-os.org )                      --
ffa_ch5_egypt.kv        6 -- http://wot.deedbot.org/17215D118B7239507FAFED98B98228A001ABFFC7.html     --
ffa_ch5_egypt.kv        7 --                                                                          --
ffa_ch5_egypt.kv        8 -- You do not have, nor can you ever acquire the right to use, copy or      --
ffa_ch5_egypt.kv        9 -- distribute this software ; Should you use this software for any purpose, --
ffa_ch5_egypt.kv       10 -- or copy and distribute it to anyone or in any manner, you are breaking   --
ffa_ch5_egypt.kv       11 -- the laws of whatever soi-disant jurisdiction, and you promise to         --
ffa_ch5_egypt.kv       12 -- continue doing so for the indefinite future. In any case, please         --
ffa_ch5_egypt.kv       13 -- always : read and understand any software ; verify any PGP signatures    --
ffa_ch5_egypt.kv       14 -- that you use - for any purpose.                                          --
ffa_ch5_egypt.kv       15 --                                                                          --
ffa_ch5_egypt.kv       16 -- See also http://trilema.com/2015/a-new-software-licensing-paradigm .     --
ffa_ch5_egypt.kv       17 ------------------------------------------------------------------------------
ffa_ch5_egypt.kv       18 ------------------------------------------------------------------------------
ffa_ch5_egypt.kv       19 
ffa_ch5_egypt.kv       20 with FZ_Type; use FZ_Type;
ffa_ch5_egypt.kv       21 
ffa_ch5_egypt.kv       22 
ffa_ch5_egypt.kv       23 package FZ_Divis is
ffa_ch5_egypt.kv       24    
ffa_ch5_egypt.kv       25    pragma Pure;
ffa_ch5_egypt.kv       26    
ffa_ch5_egypt.kv       27    -- Dividend is divided by Divisor, producing Quotient and Remainder.
ffa_ch5_egypt.kv       28    -- WARNING: NO div0 test here! Caller must test.
ffa_ch5_egypt.kv       29    procedure FZ_IDiv(Dividend  : in  FZ;
ffa_ch5_egypt.kv       30                      Divisor   : in  FZ;
ffa_ch5_egypt.kv       31                      Quotient  : out FZ;
ffa_ch5_egypt.kv       32                      Remainder : out FZ);
ffa_ch5_egypt.kv       33    pragma Precondition(Dividend'Length = Divisor'Length and
ffa_ch5_egypt.kv       34                          Quotient'Length = Remainder'Length and
ffa_ch5_egypt.kv       35                          Dividend'Length = Quotient'Length);
ffa_ch5_egypt.kv       36    
ffa_ch5_egypt.kv       37    -- Exactly same thing as IDiv, but keep only the Quotient
ffa_ch5_egypt.kv       38    procedure FZ_Div(Dividend  : in FZ;
ffa_ch5_egypt.kv       39                     Divisor   : in FZ;
ffa_ch5_egypt.kv       40                     Quotient  : out FZ);
ffa_ch5_egypt.kv       41    pragma Precondition(Dividend'Length = Divisor'Length and
ffa_ch5_egypt.kv       42                          Dividend'Length = Quotient'Length);
ffa_ch5_egypt.kv       43    
ffa_ch7_turbo_egy...   44    -- Modulus. Permits the asymmetric Dividend and Divisor in FZ_Mod_Exp.
ffa_ch5_egypt.kv       45    procedure FZ_Mod(Dividend  : in FZ;
ffa_ch5_egypt.kv       46                     Divisor   : in FZ;
ffa_ch5_egypt.kv       47                     Remainder : out FZ);
ffa_ch7_turbo_egy...   48    pragma Precondition(Dividend'Length >= Divisor'Length and
ffa_ch7_turbo_egy...   49                          Divisor'Length = Remainder'Length);
ffa_ch5_egypt.kv       50    
ffa_ch5_egypt.kv       51 end FZ_Divis;