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#include "jets/q.h"
#include "jets/w.h"
#include "noun.h"
u3_noun
u3qc_peg(u3_atom a, u3_atom b)
{
if ( (0 == a) || (0 == b) ) {
return u3m_bail(c3__exit);
}
else if ( 1 == b ) {
return u3k(a);
}
c3_d a_d, b_d;
c3_w c_w;
if ( (c3y == u3a_is_cat(a)) && (c3y == u3a_is_cat(b)) ) {
c_w = c3_bits_word(b) - 1;
a_d = a;
b_d = b;
}
else {
c3_w d_w = u3r_met(0, a);
c3_d e_d;
c_w = u3r_met(0, b) - 1;
e_d = (c3_d)c_w + d_w;
if ( 64 <= e_d ) {
u3i_slab sab_u;
u3i_slab_init(&sab_u, 0, e_d);
u3r_chop(0, 0, c_w, 0, sab_u.buf_w, b);
u3r_chop(0, 0, d_w, c_w, sab_u.buf_w, a);
return u3i_slab_moot(&sab_u);
}
a_d = u3r_chub(0, a);
b_d = u3r_chub(0, b);
}
b_d &= ((c3_d)1 << c_w) - 1;
a_d <<= c_w;
a_d ^= b_d;
return u3i_chub(a_d);
}
u3_noun
u3wc_peg(u3_noun cor)
{
u3_noun a, b;
if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
(c3n == u3ud(b)) ||
(c3n == u3ud(a) && b != 1) )
{
return u3m_bail(c3__exit);
}
else {
return u3qc_peg(a, b);
}
}
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