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73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
/* j/6/fork.c
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**
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*/
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#include "all.h"
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/* functions
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*/
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u3_noun
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u3qf_forq(u3_noun hoz,
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u3_noun bur)
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{
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if ( c3y == u3r_sing(hoz, bur) ) {
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return u3k(hoz);
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}
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else if ( c3__void == bur ) {
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return u3k(hoz);
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}
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else if ( c3__void == hoz ) {
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return u3k(bur);
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}
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else return u3kf_fork(u3nt(u3k(hoz), u3k(bur), u3_nul));
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}
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u3_noun
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u3qf_fork(u3_noun yed)
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{
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u3_noun lez = u3_nul;
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while ( u3_nul != yed ) {
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u3_noun i_yed = u3h(yed);
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if ( c3__void != i_yed ) {
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lez = u3kdi_put(lez, u3k(u3h(yed)));
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}
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yed = u3t(yed);
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}
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if ( u3_nul == lez ) {
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return c3__void;
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}
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else if ( (u3_nul == u3h(u3t(lez))) && (u3_nul == u3t(u3t(lez))) ) {
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u3_noun ret = u3k(u3h(lez));
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u3z(lez);
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return ret;
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}
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else {
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return u3nc(c3__fork, lez);
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}
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}
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u3_noun
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u3wf_fork(u3_noun cor)
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{
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u3_noun yed;
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if ( c3n == u3r_mean(cor, u3x_sam, &yed, 0) ) {
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return u3m_bail(c3__fail);
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} else {
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return u3qf_fork(yed);
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}
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}
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u3_noun
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u3kf_fork(u3_noun yed)
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{
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u3_noun ret = u3qf_fork(yed);
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u3z(yed);
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return ret;
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}
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