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56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/* j/6/cons.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_cqf_cons(
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u2_noun vur,
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u2_noun sed)
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{
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u2_noun p_vur, p_sed;
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if ( u2_yes == u2_cr_p(vur, 1, &p_vur) &&
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u2_yes == u2_cr_p(sed, 1, &p_sed) ) {
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return u2nt(1,
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u2k(p_vur),
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u2k(p_sed));
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}
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else if ( u2_yes == u2_cr_p(vur, 0, &p_vur) &&
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u2_yes == u2_cr_p(sed, 0, &p_sed) &&
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!(u2_yes == u2_cr_sing(1, p_vur)) &&
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!(u2_yes == u2_cr_sing(p_vur, p_sed)) &&
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(0 == u2_cr_nord(p_vur, p_sed)) )
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{
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u2_atom fub = u2_cqa_div(p_vur, 2);
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u2_atom nof = u2_cqa_div(p_sed, 2);
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if ( u2_yes == u2_cr_sing(fub, nof) ) {
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u2z(nof);
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return u2nc(0, fub);
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}
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else {
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u2z(fub);
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u2z(nof);
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}
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}
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return u2nc(u2k(vur), u2k(sed));
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}
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u2_noun
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u2_cwf_cons(
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u2_noun cor)
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{
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u2_noun vur, sed;
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if ( u2_no == u2_cr_mean(cor, u2_cv_sam_2, &vur, u2_cv_sam_3, &sed, 0) ) {
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return u2_cm_bail(c3__fail);
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} else {
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return u2_cqf_cons(vur, sed);
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}
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}
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