1 ------------------------------------------------------------------------------
   2 ------------------------------------------------------------------------------
   3 -- This file is part of 'Finite Field Arithmetic', aka 'FFA'.               --
   4 --                                                                          --
   5 -- (C) 2019 Stanislav Datskovskiy ( www.loper-os.org )                      --
   6 -- http://wot.deedbot.org/17215D118B7239507FAFED98B98228A001ABFFC7.html     --
   7 --                                                                          --
   8 -- You do not have, nor can you ever acquire the right to use, copy or      --
   9 -- distribute this software ; Should you use this software for any purpose, --
  10 -- or copy and distribute it to anyone or in any manner, you are breaking   --
  11 -- the laws of whatever soi-disant jurisdiction, and you promise to         --
  12 -- continue doing so for the indefinite future. In any case, please         --
  13 -- always : read and understand any software ; verify any PGP signatures    --
  14 -- that you use - for any purpose.                                          --
  15 --                                                                          --
  16 -- See also http://trilema.com/2015/a-new-software-licensing-paradigm .     --
  17 ------------------------------------------------------------------------------
  18 ------------------------------------------------------------------------------
  19 
  20 with Words; use Words;
  21 
  22 -- Elementary Predicates on Words:
  23 package W_Pred is
  24    
  25    pragma Pure;
  26    
  27    -- Return 1 if N is equal to 0; otherwise return 0.
  28    function W_ZeroP(N : in Word) return WBool;
  29    pragma Inline_Always(W_ZeroP);
  30    
  31    -- Return 1 if N is unequal to 0; otherwise return 0.
  32    function W_NZeroP(N : in Word) return WBool;
  33    pragma Inline_Always(W_NZeroP);
  34    
  35    -- Return WBool-complement of N.
  36    function W_Not(N : in WBool) return WBool;
  37    pragma Inline_Always(W_Not);
  38    
  39    -- Return 1 if N is odd; otherwise return 0.
  40    function W_OddP(N : in Word) return WBool;
  41    pragma Inline_Always(W_OddP);
  42    
  43    -- Return 1 if A is equal to B ; otherwise return 0.
  44    function W_EqP(A : in Word; B : in Word) return WBool;
  45    pragma Inline_Always(W_EqP);
  46    
  47    -- Return 1 if A is less than B ; otherwise return 0.
  48    function W_LtP(A : in Word; B : in Word) return WBool;
  49    pragma Inline_Always(W_LtP);
  50    
  51 end W_Pred;