urbit/j/3/con.c
2014-09-05 13:13:24 -07:00

53 lines
1012 B
C

/* j/3/con.c
**
** This file is in the public domain.
*/
#include "all.h"
/* functions
*/
u3_noun
u3_cqc_con(u3_atom a,
u3_atom b)
{
c3_w lna_w = u3_cr_met(5, a);
c3_w lnb_w = u3_cr_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 = u3_ca_slab(len_w);
if ( 0 == sal_w ) {
return u3_cm_bail(c3__fail);
}
else {
c3_w i_w;
u3_cr_chop(5, 0, lna_w, 0, sal_w, a);
for ( i_w = 0; i_w < lnb_w; i_w++ ) {
sal_w[i_w] |= u3_cr_word(i_w, b);
}
// return u3_ca_moot(sal_w);
return u3_ca_malt(sal_w);
}
}
}
u3_noun
u3_cwc_con(u3_noun cor)
{
u3_noun a, b;
if ( (u3_no == u3_cr_mean(cor, u3_cv_sam_2, &a, u3_cv_sam_3, &b, 0)) ||
(u3_no == u3ud(a)) ||
(u3_no == u3ud(b)) )
{
return u3_cm_bail(c3__exit);
} else {
return u3_cqc_con(a, b);
}
}