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52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
/* j/4/by_get.c
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**
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** This file is in the public domain.
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*/
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#include "all.h"
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/* functions
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*/
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u2_noun
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u2_cqdb_get(
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u2_noun a,
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u2_noun b)
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{
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if ( u2_nul == a ) {
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return u2_nul;
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}
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else {
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u2_noun l_a, n_a, r_a;
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u2_noun pn_a, qn_a;
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if ( (u2_no == u2_cr_trel(a, &n_a, &l_a, &r_a)) ||
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(u2_no == u2_cr_cell(n_a, &pn_a, &qn_a) ) )
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{
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return u2_cm_bail(c3__exit);
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}
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else {
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if ( (u2_yes == u2_cr_sing(b, pn_a)) ) {
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return u2nc(u2_nul, u2k(qn_a));
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}
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else {
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if ( u2_yes == u2_cqc_gor(b, pn_a) ) {
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return u2_cqdb_get(l_a, b);
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}
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else return u2_cqdb_get(r_a, b);
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}
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}
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}
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}
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u2_noun
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u2_cwdb_get(
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u2_noun cor)
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{
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u2_noun a, b;
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if ( u2_no == u2_cr_mean(cor, u2_cv_sam, &b, u2_cv_con_sam, &a, 0) ) {
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return u2_cm_bail(c3__exit);
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} else {
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return u2_cqdb_get(a, b);
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}
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}
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