mirror of
https://github.com/urbit/shrub.git
synced 2024-12-23 10:52:12 +03:00
40 lines
714 B
C
40 lines
714 B
C
/* j/2/levy.c
|
|
**
|
|
*/
|
|
#include "all.h"
|
|
|
|
|
|
/* functions
|
|
*/
|
|
u3_noun
|
|
u3qb_levy(u3_noun a,
|
|
u3_noun b)
|
|
{
|
|
if ( 0 == a ) {
|
|
return c3y;
|
|
} else {
|
|
u3_noun loz;
|
|
|
|
if ( c3n == u3du(a) ) {
|
|
return u3m_bail(c3__exit);
|
|
}
|
|
else switch ( (loz = u3n_slam_on(u3k(b), u3k(u3h(a)))) ) {
|
|
case c3y: return u3qb_levy(u3t(a), b);
|
|
case c3n: return c3n;
|
|
default: u3z(loz);
|
|
return u3m_bail(c3__exit);
|
|
}
|
|
}
|
|
}
|
|
u3_noun
|
|
u3wb_levy(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_levy(a, b);
|
|
}
|
|
}
|