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46 lines
632 B
C
46 lines
632 B
C
/* j/3/mas.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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u3qc_mas(u3_atom a)
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{
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c3_w b_w;
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u3_atom c, d, e, f;
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b_w = u3r_met(0, a);
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if ( b_w < 2 ) {
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return u3m_bail(c3__exit);
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}
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else {
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c = u3qc_bex((b_w - 1));
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d = u3qc_bex((b_w - 2));
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e = u3qa_sub(a, c);
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f = u3qc_con(e, d);
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u3z(c);
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u3z(d);
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u3z(e);
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return f;
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}
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}
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u3_noun
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u3wc_mas(u3_noun cor)
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{
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u3_noun a;
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if ( (u3_none == (a = u3r_at(u3x_sam, cor))) ||
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(c3n == u3ud(a)) )
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{
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return u3m_bail(c3__exit);
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} else {
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return u3qc_mas(a);
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}
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}
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