diff options
Diffstat (limited to 'theories/PArith/BinPosDef.v')
-rw-r--r-- | theories/PArith/BinPosDef.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/PArith/BinPosDef.v b/theories/PArith/BinPosDef.v index fe1ec9398..4f8d9ee27 100644 --- a/theories/PArith/BinPosDef.v +++ b/theories/PArith/BinPosDef.v @@ -482,8 +482,8 @@ Fixpoint lxor (p q:positive) : N := (** Shifts. NB: right shift of 1 stays at 1. *) -Definition shiftl_nat (p:positive) := nat_rect _ p (fun _ => xO). -Definition shiftr_nat (p:positive) := nat_rect _ p (fun _ => div2). +Definition shiftl_nat (p:positive)(n:nat) := Nat.iter n xO p. +Definition shiftr_nat (p:positive)(n:nat) := Nat.iter n div2 p. Definition shiftl (p:positive)(n:N) := match n with |