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69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* j/3/rsh.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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#include "../pit.h"
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/* functions
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*/
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u2_weak // transfer
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u2_cqc_rsh(
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u2_atom a, // retain
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u2_atom b, // retain
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u2_atom c) // retain
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{
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if ( u2_ne(u2_co_is_cat(a)) || (a >= 32) ) {
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return u2_cm_bail(c3__fail);
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}
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else if ( u2_ne(u2_co_is_cat(b)) ) {
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return 0;
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}
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else {
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c3_g a_g = a;
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c3_w b_w = b;
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c3_w len_w = u2_cr_met(a_g, c);
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if ( b_w >= len_w ) {
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return 0;
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}
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else {
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c3_w* sal_w = u2_ca_slaq(a_g, (len_w - b_w));
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if ( 0 == sal_w ) {
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return u2_cm_bail(c3__fail);
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}
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u2_cr_chop(a_g, b_w, (len_w - b_w), 0, sal_w, c);
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// return u2_ca_moot(sal_w);
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return u2_ca_malt(sal_w);
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}
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}
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}
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u2_weak // transfer
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j2_mb(Pt3, rsh)(
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u2_noun cor) // retain
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{
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u2_noun a, b, c;
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if ( (u2_no == u2_cr_mean(cor, u2_cv_sam_2, &a,
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u2_cv_sam_6, &b,
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u2_cv_sam_7, &c, 0)) ||
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(u2_no == u2ud(a)) ||
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(u2_no == u2ud(b)) ||
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(u2_no == u2ud(c)) )
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{
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return u2_cm_bail(c3__exit);
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} else {
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return u2_cqc_rsh(a, b, c);
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}
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}
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/* structures
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*/
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u2_ho_jet
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j2_mbj(Pt3, rsh)[] = {
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{ ".2", c3__lite, j2_mb(Pt3, rsh), Tier3, u2_none, u2_none },
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{ }
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};
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