File : fz_pred.ads
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 end FZ_Pred;