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 with FZ_Type; use FZ_Type; 22 23 24 package FZ_Pred is 25 26 pragma Pure; 27 28 -------------------------------------------- 29 -- Fundamental Predicate Operations on FZ -- 30 -------------------------------------------- 31 32 -- 1 iff N == 0 (branch-free); else 0 33 function FZ_ZeroP(N : in FZ) return WBool; 34 pragma Inline_Always(FZ_ZeroP); 35 36 -- 1 iff N != 0 (branch-free); else 0 37 function FZ_NZeroP(N : in FZ) return WBool; 38 pragma Inline_Always(FZ_NZeroP); 39 40 -- 1 iff N is odd 41 function FZ_OddP(N : in FZ) return WBool; 42 pragma Inline_Always(FZ_OddP); 43 44 -- 1 iff N fits inside one Word 45 function FZ_OneWordP(N : in FZ) return WBool; 46 pragma Inline_Always(FZ_OneWordP); 47 48 end FZ_Pred;