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fix ccint

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This commit is contained in:
Simon Cruanes 2018-02-27 21:37:28 -06:00
parent da6d4a72fa
commit 98bb766de6
1 changed files with 40 additions and 41 deletions
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81
src/core/CCInt.ml
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@ -1,13 +1,6 @@
(* This file is free software, part of containers. See file "license" for more details. *)
module Infix = struct
include Pervasives
let (--) = range
let (--^) = range'
end
include Infix
type t = int
let equal (a:int) b = Pervasives.(=) a b
@ -16,6 +9,46 @@ let compare a b = compare a b
let hash i = i land max_int
let range i j yield =
let rec up i j yield =
if i=j then yield i
else (
yield i;
up (i+1) j yield
)
and down i j yield =
if i=j then yield i
else (
yield i;
down (i-1) j yield
)
in
if i<=j then up i j yield else down i j yield
(*$= & ~printer:Q.Print.(list int)
[0;1;2;3;4;5] (range 0 5 |> Sequence.to_list)
[0] (range 0 0 |> Sequence.to_list)
[5;4;3;2] (range 5 2 |> Sequence.to_list)
*)
let range' i j yield =
if i<j then range i (j-1) yield
else if i=j then ()
else range i (j+1) yield
(*$= & ~printer:Q.Print.(list int)
[] (range' 0 0 |> Sequence.to_list)
[0;1;2;3;4] (range' 0 5 |> Sequence.to_list)
[5;4;3] (range' 5 2 |> Sequence.to_list)
*)
module Infix = struct
include Pervasives
let (--) = range
let (--^) = range'
end
include Infix
let sign i =
if i < 0 then -1
else if i>0 then 1
@ -218,37 +251,3 @@ let range_by ~step i j yield =
(CCInt.range_by ~step:1 i j |> Sequence.to_list) \
(CCInt.range i j |> Sequence.to_list) )
*)
let range i j yield =
let rec up i j yield =
if i=j then yield i
else (
yield i;
up (i+1) j yield
)
and down i j yield =
if i=j then yield i
else (
yield i;
down (i-1) j yield
)
in
if i<=j then up i j yield else down i j yield
(*$= & ~printer:Q.Print.(list int)
[0;1;2;3;4;5] (range 0 5 |> Sequence.to_list)
[0] (range 0 0 |> Sequence.to_list)
[5;4;3;2] (range 5 2 |> Sequence.to_list)
*)
let range' i j yield =
if i<j then range i (j-1) yield
else if i=j then ()
else range i (j+1) yield
(*$= & ~printer:Q.Print.(list int)
[] (range' 0 0 |> Sequence.to_list)
[0;1;2;3;4] (range' 0 5 |> Sequence.to_list)
[5;4;3] (range' 5 2 |> Sequence.to_list)
*)