diff options
Diffstat (limited to '')
| -rw-r--r-- | stdlib/source/lux/data/number/i64.lux | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/stdlib/source/lux/data/number/i64.lux b/stdlib/source/lux/data/number/i64.lux index 8dfec1fc7..ea4b1987f 100644 --- a/stdlib/source/lux/data/number/i64.lux +++ b/stdlib/source/lux/data/number/i64.lux @@ -4,6 +4,8 @@ [equivalence (#+ Equivalence)] [hash (#+ Hash)] [monoid (#+ Monoid)]] + [control + ["." try]] [data [number ["n" nat]]]]) @@ -125,8 +127,8 @@ (structure: #export equivalence (All [a] (Equivalence (I64 a))) - (def: (= parameter subject) - ("lux i64 =" parameter subject))) + (def: (= reference sample) + ("lux i64 =" reference sample))) (structure: #export hash (All [a] (Hash (I64 a))) @@ -140,13 +142,38 @@ (All [a] (Monoid (I64 a))) (def: identity <identity>) - (def: compose <compose>) - )] + (def: compose <compose>))] [disjunction ..false ..or] [conjunction ..true ..and] ) +(template [<swap> <size> <pattern>] + [(def: <swap> + (All [a] (-> (I64 a) (I64 a))) + (let [high (try.assume (\ n.binary decode <pattern>)) + low (..rotate-right <size> high)] + (function (_ value) + (..or (..logic-right-shift <size> (..and high value)) + (..left-shift <size> (..and low value))))))] + + [swap/32 32 "1111111111111111111111111111111100000000000000000000000000000000"] + [swap/16 16 "1111111111111111000000000000000011111111111111110000000000000000"] + [swap/08 08 "1111111100000000111111110000000011111111000000001111111100000000"] + [swap/04 04 "1111000011110000111100001111000011110000111100001111000011110000"] + [swap/02 02 "1100110011001100110011001100110011001100110011001100110011001100"] + [swap/01 01 "1010101010101010101010101010101010101010101010101010101010101010"] + ) + +(def: #export reverse + (All [a] (-> (I64 a) (I64 a))) + (|>> ..swap/32 + ..swap/16 + ..swap/08 + ..swap/04 + ..swap/02 + ..swap/01)) + (signature: #export (Sub size) (: (Equivalence (I64 size)) &equivalence) |