mirror of
https://github.com/urbit/shrub.git
synced 2024-12-11 11:02:25 +03:00
52 lines
896 B
C
52 lines
896 B
C
/* j/3/mix.c
|
|
**
|
|
*/
|
|
#include "all.h"
|
|
|
|
|
|
/* functions
|
|
*/
|
|
u3_noun
|
|
u3qc_mix(u3_atom a,
|
|
u3_atom b)
|
|
{
|
|
c3_w lna_w = u3r_met(5, a);
|
|
c3_w lnb_w = u3r_met(5, b);
|
|
|
|
if ( (lna_w == 0) && (lnb_w == 0) ) {
|
|
return 0;
|
|
} else {
|
|
c3_w len_w = c3_max(lna_w, lnb_w);
|
|
c3_w* sal_w = u3a_slab(len_w);
|
|
|
|
if ( 0 == sal_w ) {
|
|
return u3m_bail(c3__fail);
|
|
}
|
|
else {
|
|
c3_w i_w;
|
|
|
|
u3r_chop(5, 0, lna_w, 0, sal_w, a);
|
|
|
|
for ( i_w = 0; i_w < lnb_w; i_w++ ) {
|
|
sal_w[i_w] ^= u3r_word(i_w, b);
|
|
}
|
|
return u3a_malt(sal_w);
|
|
}
|
|
}
|
|
}
|
|
u3_noun
|
|
u3wc_mix(u3_noun cor)
|
|
{
|
|
u3_noun a, b;
|
|
|
|
if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
|
|
(c3n == u3ud(a)) ||
|
|
(c3n == u3ud(b)) )
|
|
{
|
|
return u3m_bail(c3__exit);
|
|
} else {
|
|
return u3qc_mix(a, b);
|
|
}
|
|
}
|
|
|