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/// @file
#include "jets/q.h"
#include "jets/w.h"
#include "noun.h"
// [a] is RETAINED, [out] is TRANSFERRED
//
static void
_in_rep(u3_noun a, u3j_site* sit_u, u3_noun* out)
{
if ( u3_nul == a ) {
return;
}
else {
u3_noun n_a, l_a, r_a;
u3x_trel(a, &n_a, &l_a, &r_a);
*out = u3j_gate_slam(sit_u, u3nc(u3k(n_a), *out));
_in_rep(l_a, sit_u, out);
_in_rep(r_a, sit_u, out);
}
}
u3_noun
u3qdi_rep(u3_noun a, u3_noun b)
{
u3_noun out = u3k(u3x_at(u3x_sam_3, b));
u3j_site sit_u;
u3j_gate_prep(&sit_u, u3k(b));
_in_rep(a, &sit_u, &out);
u3j_gate_lose(&sit_u);
return out;
}
u3_noun
u3wdi_rep(u3_noun cor)
{
u3_noun a, b;
u3x_mean(cor, u3x_sam, &b, u3x_con_sam, &a, 0);
return u3qdi_rep(a, b);
}
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