Numbers and bitwise functions.

 See NatInt/NZBits.v for the common axiomatization of bitwise functions
 over naturals / integers. Some specs aren't pretty, but easier to
 prove, see alternate statements in property functors {N,Z}Bits.
 Negative numbers are considered via the two's complement convention.

 We provide implementations for N (in Ndigits.v), for nat (quite dummy,
 just for completeness), for Z (new file Zdigits_def), for BigN
 (for the moment partly by converting to N, to be improved soon)
 and for BigZ.

 NOTA: For BigN.shiftl and BigN.shiftr, the two arguments are now in
 the reversed order (for consistency with the rest of the world):
 for instance BigN.shiftl 1 10 is 2^10.

 NOTA2: Zeven.Zdiv2 is _not_ doing (Zdiv _ 2), but rather (Zquot _ 2)
 on negative numbers. For the moment I've kept it intact, and have
 just added a Zdiv2' which is truly equivalent to (Zdiv _ 2).
 To reorganize someday ?

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13689 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 2 insertions, 1 deletions

diff --git a/theories/ZArith/ZArith.v b/theories/ZArith/ZArith.v
index 26d700773..e532e4ad9 100644
--- a/theories/ZArith/ZArith.v
+++ b/theories/ZArith/ZArith.v
@@ -12,7 +12,8 @@ Require Export ZArith_base.
 
 (** Extra definitions *)
 
-Require Export Zpow_def Zsqrt_def Zlog_def Zgcd_def Zdiv_def.
+Require Export
+ Zpow_def Zsqrt_def Zlog_def Zgcd_def Zdiv_def Zdigits_def.
 
 (** Extra modules using [Omega] or [Ring]. *)