urbit/base/pub/doc/hoon/runes/sg/sgcn.md
2015-04-29 18:48:45 -04:00

1.1 KiB

sigcen, ~%, %sgcn

Core jet

~% is a synthetic rune, identifies a core for specific optimization.

Produces

Twig: [%sgcn p=term q=twig r=tyre s=twig]

Sample

p is a ++term q is a twig r is a ++tyre s is a twig

Tall form

~%    p
        q
      ==
        p.i.r    q.i.r
        p.i.t.r  q.i.t.r
      ==
    s

~%    p
    q
  ~
s

Wide form

None

Irregular form

None

Examples

++  aesc                                                ::  AES-256
  ~%  %aesc  +  ~
  |%
  ++  en                                                ::  ECB enc
    ~/  %en
    |=  [a=@I b=@H]  ^-  @uxH
    =+  ahem
    (be & (ex a) b)
  ++  de                                                ::  ECB dec
    ~/  %de
    |=  [a=@I b=@H]  ^-  @uxH
    =+  ahem
    (be | (ix (ex a)) b)
  --

Here we label the entire ++aesc core for optimization. You can see the jet in gen164/5/aesc.c.