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 4beeea31d..6d85f0723 100644 --- a/theories/PArith/BinPosDef.v +++ b/theories/PArith/BinPosDef.v @@ -484,8 +484,8 @@ Fixpoint lxor (p q:positive) : N := (** Shifts. NB: right shift of 1 stays at 1. *) -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_nat (p:positive)(n:nat) := nat_rect _ p (fun _ => xO) n. +Definition shiftr_nat (p:positive)(n:nat) := nat_rect _ p (fun _ => div2) n. Definition shiftl (p:positive)(n:N) := match n with |