ilyakooo0/urbit
1
0
Fork 0
mirror of https://github.com/ilyakooo0/urbit.git synced 2024-09-21 15:38:59 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix add:rd & sub:rd jet failure.

Browse Source
This commit is contained in:
Jared Hance 2014-06-30 11:23:46 -04:00
parent c0758b3704
commit ac9feb7542
1 changed files with 20 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
arvo/hoon.hoon
View File

@ -1141,6 +1141,21 @@
(new | (add +.c +.d))
++ sun |=(a=@u (mul 2 a)) :: @u to @s
++ syn |=(a=@s =(0 (end 0 1 a))) :: sign test
++ cmp |= [a=@s b=@s] :: compare
^- @s
?: =(a b)
--0
?: (syn a)
?: (syn b)
?: (gth a b)
--1
-1
--1
?: (syn b)
-1
?: (gth a b)
-1
--1
--
++ fe :: modulo bloq
|_ a=bloq
@ -1393,12 +1408,12 @@
m
?: (zer:te:fl b p m)
n
?: &(!s.n !s.m) :: both negative
?: &(!s.n !s.m) :: both negative
=+ r=$(s.n %.y, s.m %.y)
[s=%.n e=e.r a=a.r]
?. &(s.n s.m) :: if not both positive
(sub b p n [s=!s.m e=e.m a=a.m]) :: is actually sub
?. (^gte e.n e.m) :: guarantee e.n > e.m
?. &(s.n s.m) :: if not both positive
(sub b p n [s=!s.m e=e.m a=a.m]) :: is actually sub
?: =(-1 (cmp:si e.n e.m)) :: guarantee e.n > e.m
$(n m, m n)
=+ dif=(abs:si (dif:si e.n e.m)) :: always pos
=+ a2=(lsh 0 dif a.n) :: p+1+dif bits
@ -1417,7 +1432,7 @@
(add b p m [s=%.n e.m a.m]) :: add handles negative case
?: &(s.n !s.m) :: a+b
(add b p m [s=%.y e.m a.m]) :: is actually add
?. |((^gth e.n e.m) &(=(e.n e.m) (^gte a.n a.m))) :: n > m
?. |(=(--1 (cmp:si e.n e.m)) &(=(e.n e.m) (^gte a.n a.m))) :: n > m
$(n m(s !s.m), m n(s !s.n))
=+ dif=(abs:si (dif:si e.n e.m))
=+ a2=(lsh 0 dif a.n) :: p+1+dif bits