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https://github.com/ilyakooo0/urbit.git
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93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/* j/3/rip.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_rip(u3_atom a,
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u3_atom b)
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{
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if ( !_(u3a_is_cat(a)) || (a >= 32) ) {
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return u3m_bail(c3__fail);
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}
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else {
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u3_noun pir = u3_nul;
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c3_g a_g = a;
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c3_w i_w;
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if ( a_g < 5 ) {
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c3_w met_w = u3r_met(a_g, b);
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c3_w mek_w = ((1 << (1 << a_g)) - 1);
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for ( i_w = 0; i_w < met_w; i_w++ ) {
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c3_w pat_w = (met_w - (i_w + 1));
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c3_w bit_w = (pat_w << a_g);
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c3_w wor_w = (bit_w >> 5);
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c3_w sif_w = (bit_w & 31);
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c3_w src_w = u3r_word(wor_w, b);
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c3_w rip_w = ((src_w >> sif_w) & mek_w);
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pir = u3nc(rip_w, pir);
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}
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return pir;
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}
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else {
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c3_w met_w = u3r_met(a_g, b);
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c3_w len_w = u3r_met(5, b);
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c3_g san_g = (a_g - 5);
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c3_w san_w = 1 << san_g;
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c3_w dif_w = (met_w << san_g) - len_w;
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c3_w tub_w = ((dif_w == 0) ? san_w : (san_w - dif_w));
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for ( i_w = 0; i_w < met_w; i_w++ ) {
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c3_w pat_w = (met_w - (i_w + 1));
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c3_w wut_w = (pat_w << san_g);
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c3_w sap_w = ((0 == i_w) ? tub_w : san_w);
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c3_w* sal_w = u3a_slab(sap_w);
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if ( 0 == sal_w ) {
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return u3m_bail(c3__fail);
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} else {
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c3_w j_w;
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u3_atom rip;
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for ( j_w = 0; j_w < sap_w; j_w++ ) {
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sal_w[j_w] = u3r_word(wut_w + j_w, b);
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}
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rip = u3a_malt(sal_w);
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pir = u3nc(rip, pir);
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}
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len_w -= san_w;
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}
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}
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return pir;
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}
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}
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u3_noun
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u3wc_rip(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_rip(a, b);
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}
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}
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u3_noun
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u3kc_rip(u3_atom a,
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u3_atom b)
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{
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u3_noun res = u3qc_rip(a, b);
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u3z(a); u3z(b);
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return res;
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}
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