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53 lines
963 B
C
53 lines
963 B
C
/* j/3/dis.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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u3qc_dis(u3_atom a,
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u3_atom b)
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{
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c3_w lna_w = u3r_met(5, a);
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c3_w lnb_w = u3r_met(5, b);
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if ( (lna_w == 0) && (lnb_w == 0) ) {
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return 0;
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} else {
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c3_w len_w = c3_max(lna_w, lnb_w);
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c3_w* sal_w = u3a_slab(len_w);
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if ( 0 == sal_w ) {
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return u3m_bail(c3__fail);
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}
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else {
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c3_w i_w;
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u3r_chop(5, 0, lna_w, 0, sal_w, a);
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for ( i_w = 0; i_w < len_w; i_w++ ) {
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sal_w[i_w] &= (i_w >= lnb_w) ? 0 : u3r_word(i_w, b);
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}
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return u3a_malt(sal_w);
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}
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}
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}
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u3_noun
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u3wc_dis(u3_noun cor)
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{
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u3_noun a, b;
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if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
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(c3n == u3ud(a)) ||
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(c3n == u3ud(b)) )
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{
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return u3m_bail(c3__exit);
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} else {
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return u3qc_dis(a, b);
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}
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}
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