urbit/j/4/by_has.c

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/* j/4/by_has.c
**
** This file is in the public domain.
*/
#include "all.h"
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/* functions
*/
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u3_bean
u3_cqdb_has(
u3_noun a,
u3_noun b)
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{
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if ( u3_nul == a ) {
return u3_no;
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}
else {
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u3_noun l_a, n_a, r_a;
u3_noun pn_a, qn_a;
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if ( (u3_no == u3_cr_trel(a, &n_a, &l_a, &r_a)) ||
(u3_no == u3_cr_cell(n_a, &pn_a, &qn_a)) )
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{
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return u3_cm_bail(c3__exit);
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}
else {
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if ( (u3_yes == u3_cr_sing(b, pn_a)) ) {
return u3_yes;
}
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else {
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if ( u3_yes == u3_cqc_gor(b, pn_a) ) {
return u3_cqdb_has(l_a, b);
}
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else return u3_cqdb_has(r_a, b);
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}
}
}
}
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u3_noun
u3_cwdb_has(
u3_noun cor)
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{
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u3_noun a, b;
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if ( u3_no == u3_cr_mean(cor, u3_cv_sam, &b, u3_cv_con_sam, &a, 0) ) {
return u3_cm_bail(c3__exit);
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} else {
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return u3_cqdb_has(a, b);
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}
}
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u3_bean
u3_ckdb_has(u3_noun a, u3_noun b)
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{
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u3_weak c = u3_cqdb_has(a, b);
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u3z(a); u3z(b);
if ( u3_none == c ) {
return u3_cm_bail(c3__exit);
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}
else return c;
}
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