raw
ffa_ch3_shifts.kv       1 ------------------------------------------------------------------------------
ffa_ch3_shifts.kv       2 ------------------------------------------------------------------------------
ffa_ch3_shifts.kv       3 -- This file is part of 'Finite Field Arithmetic', aka 'FFA'.               --
ffa_ch3_shifts.kv       4 --                                                                          --
ffa_ch3_shifts.kv       5 -- (C) 2017 Stanislav Datskovskiy ( www.loper-os.org )                      --
ffa_ch3_shifts.kv       6 -- http://wot.deedbot.org/17215D118B7239507FAFED98B98228A001ABFFC7.html     --
ffa_ch3_shifts.kv       7 --                                                                          --
ffa_ch3_shifts.kv       8 -- You do not have, nor can you ever acquire the right to use, copy or      --
ffa_ch3_shifts.kv       9 -- distribute this software ; Should you use this software for any purpose, --
ffa_ch3_shifts.kv      10 -- or copy and distribute it to anyone or in any manner, you are breaking   --
ffa_ch3_shifts.kv      11 -- the laws of whatever soi-disant jurisdiction, and you promise to         --
ffa_ch3_shifts.kv      12 -- continue doing so for the indefinite future. In any case, please         --
ffa_ch3_shifts.kv      13 -- always : read and understand any software ; verify any PGP signatures    --
ffa_ch3_shifts.kv      14 -- that you use - for any purpose.                                          --
ffa_ch3_shifts.kv      15 --                                                                          --
ffa_ch3_shifts.kv      16 -- See also http://trilema.com/2015/a-new-software-licensing-paradigm .     --
ffa_ch3_shifts.kv      17 ------------------------------------------------------------------------------
ffa_ch3_shifts.kv      18 ------------------------------------------------------------------------------
ffa_ch3_shifts.kv      19 
ffa_ch3_shifts.kv      20 with Words;   use Words;
ffa_ch3_shifts.kv      21 with FZ_Type; use FZ_Type;
ffa_ch3_shifts.kv      22 
ffa_ch3_shifts.kv      23 
ffa_ch3_shifts.kv      24 package FZ_Shift is
ffa_ch3_shifts.kv      25    
ffa_ch3_shifts.kv      26    pragma Pure;
ffa_ch3_shifts.kv      27    
ffa_ch3_shifts.kv      28    --------------------------------------------------------------
ffa_ch3_shifts.kv      29    -- Shift Right
ffa_ch3_shifts.kv      30    --------------------------------------------------------------
ffa_ch3_shifts.kv      31    
ffa_ch3_shifts.kv      32    -- ShiftedN := N >> Count (with Overflow Input and Output)
ffa_ch3_shifts.kv      33    procedure FZ_ShiftRight_O_I(N        : in  FZ;
ffa_ch3_shifts.kv      34                                ShiftedN : out FZ;
ffa_ch3_shifts.kv      35                                Count    : in  WBit_Index;
ffa_ch3_shifts.kv      36                                Overflow : out Word;
ffa_ch3_shifts.kv      37                                OF_in    : in  Word);
ffa_ch3_shifts.kv      38    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      39    
ffa_ch3_shifts.kv      40    -- ShiftedN := N >> Count (with Overflow Output only)
ffa_ch3_shifts.kv      41    procedure FZ_ShiftRight_O(N        : in  FZ;
ffa_ch3_shifts.kv      42                              ShiftedN : out FZ;
ffa_ch3_shifts.kv      43                              Count    : in  WBit_Index;
ffa_ch3_shifts.kv      44                              Overflow : out Word);
ffa_ch3_shifts.kv      45    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      46    
ffa_ch3_shifts.kv      47    -- ShiftedN := N >> Count (no Overflow output or input)
ffa_ch3_shifts.kv      48    procedure FZ_ShiftRight(N        : in  FZ;
ffa_ch3_shifts.kv      49                            ShiftedN : out FZ;
ffa_ch3_shifts.kv      50                            Count    : in  WBit_Index);
ffa_ch3_shifts.kv      51    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      52    
ffa_ch3_shifts.kv      53    --------------------------------------------------------------
ffa_ch3_shifts.kv      54    -- Shift Left
ffa_ch3_shifts.kv      55    --------------------------------------------------------------
ffa_ch3_shifts.kv      56 
ffa_ch3_shifts.kv      57    -- ShiftedN := N << Count (with Overflow Input and Output)
ffa_ch3_shifts.kv      58    procedure FZ_ShiftLeft_O_I(N        : in  FZ;
ffa_ch3_shifts.kv      59                               ShiftedN : out FZ;
ffa_ch3_shifts.kv      60                               Count    : in  WBit_Index;
ffa_ch3_shifts.kv      61                               Overflow : out Word;
ffa_ch3_shifts.kv      62                               OF_in    : in  Word);
ffa_ch3_shifts.kv      63    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      64    
ffa_ch3_shifts.kv      65    -- ShiftedN := N << Count (with Overflow Output only)
ffa_ch3_shifts.kv      66    procedure FZ_ShiftLeft_O(N        : in  FZ;
ffa_ch3_shifts.kv      67                             ShiftedN : out FZ;
ffa_ch3_shifts.kv      68                             Count    : in  WBit_Index;
ffa_ch3_shifts.kv      69                             Overflow : out Word);
ffa_ch3_shifts.kv      70    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      71    
ffa_ch3_shifts.kv      72    -- ShiftedN := N << Count (no Overflow output or input)
ffa_ch3_shifts.kv      73    procedure FZ_ShiftLeft(N        : in  FZ;
ffa_ch3_shifts.kv      74                           ShiftedN : out FZ;
ffa_ch3_shifts.kv      75                           Count    : in  WBit_Index);
ffa_ch3_shifts.kv      76    pragma Precondition(N'Length = ShiftedN'Length);
ffa_ch3_shifts.kv      77    
ffa_ch3_shifts.kv      78 end FZ_Shift;