mirror of
https://github.com/urbit/shrub.git
synced 2024-12-23 10:52:12 +03:00
47 lines
867 B
C
47 lines
867 B
C
/* j/2/murn.c
|
|
**
|
|
*/
|
|
#include "all.h"
|
|
|
|
|
|
/* functions
|
|
*/
|
|
u3_noun
|
|
u3qb_murn(u3_noun a, u3_noun b)
|
|
{
|
|
if ( 0 == a ) {
|
|
return a;
|
|
}
|
|
else if ( c3n == u3du(a) ) {
|
|
return u3m_bail(c3__exit);
|
|
}
|
|
else {
|
|
u3_noun one = u3n_slam_on(u3k(b), u3k(u3h(a)));
|
|
u3_noun two = u3qb_murn(u3t(a), b);
|
|
u3_noun nex;
|
|
|
|
switch ( u3ud(one) ) {
|
|
case c3y: u3z(one);
|
|
return two;
|
|
case c3n: nex = u3nc(u3k(u3t(one)), two);
|
|
u3z(one);
|
|
return nex;
|
|
default: u3z(one);
|
|
u3z(two);
|
|
return u3_none;
|
|
}
|
|
}
|
|
}
|
|
u3_noun
|
|
u3wb_murn(u3_noun cor)
|
|
{
|
|
u3_noun a, b;
|
|
|
|
if ( c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0) ) {
|
|
return u3m_bail(c3__exit);
|
|
} else {
|
|
return u3qb_murn(a, b);
|
|
}
|
|
}
|
|
|