mirror of
https://github.com/urbit/shrub.git
synced 2024-12-16 06:51:14 +03:00
39 lines
535 B
C
39 lines
535 B
C
/* j/3/bex.c
|
|
**
|
|
*/
|
|
#include "all.h"
|
|
|
|
|
|
/* functions
|
|
*/
|
|
u3_noun
|
|
u3qc_bex(u3_atom a)
|
|
{
|
|
mpz_t a_mp;
|
|
|
|
if ( !_(u3a_is_cat(a)) ) {
|
|
return u3m_bail(c3__fail);
|
|
}
|
|
else {
|
|
mpz_init_set_ui(a_mp, 1);
|
|
mpz_mul_2exp(a_mp, a_mp, a);
|
|
|
|
return u3i_mp(a_mp);
|
|
}
|
|
}
|
|
u3_noun
|
|
u3wc_bex(
|
|
u3_noun cor)
|
|
{
|
|
u3_noun a;
|
|
|
|
if ( (u3_none == (a = u3r_at(u3x_sam, cor))) ||
|
|
(c3n == u3ud(a)) )
|
|
{
|
|
return u3m_bail(c3__exit);
|
|
} else {
|
|
return u3qc_bex(a);
|
|
}
|
|
}
|
|
|