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54 lines
868 B
C
54 lines
868 B
C
/* j/3/mat.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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u3_noun
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u3qe_mat(
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u3_atom a)
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{
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if ( 0 == a ) {
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return u3nc(1, 1);
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} else {
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u3_atom b = u3qc_met(0, a);
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u3_atom c = u3qc_met(0, b);
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u3_atom u, v, w, x, y, z;
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u3_atom p, q;
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u = u3qa_dec(c);
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v = u3qa_add(c, c);
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w = u3qc_bex(c);
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x = u3qc_end(0, u, b);
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y = u3qc_lsh(0, u, a);
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z = u3qc_mix(x, y);
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p = u3qa_add(v, b);
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q = u3qc_cat(0, w, z);
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u3z(u);
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u3z(v);
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u3z(w);
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u3z(x);
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u3z(y);
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u3z(z);
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return u3nc(p, q);
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}
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}
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u3_noun
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u3we_mat(
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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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return u3m_bail(c3__fail);
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} else {
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return u3qe_mat(a);
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}
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}
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