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82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/* j/3/cut.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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j2_mbc(Pt3, cut)(u2_wire wir_r,
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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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u2_atom d) // retain
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{
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if ( !u2_fly_is_cat(a) || (a >= 32) ) {
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return u2_bl_bail(wir_r, c3__fail);
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}
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if ( !u2_fly_is_cat(b) ) {
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return _0;
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}
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if ( !u2_fly_is_cat(c) ) {
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c = 0x7fffffff;
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}
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{
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c3_g a_g = a;
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c3_w b_w = b;
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c3_w c_w = c;
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c3_w len_w = u2_met(a_g, d);
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if ( (_0 == c_w) || (b_w >= len_w) ) {
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return _0;
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}
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if ( b_w + c_w > len_w ) {
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c_w = (len_w - b_w);
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}
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if ( (b_w == 0) && (c_w == len_w) ) {
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return u2_rx(wir_r, d);
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}
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else {
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u2_ray sal_r = u2_rl_slaq(wir_r, a_g, c_w);
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if ( 0 == sal_r ) {
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return u2_bl_bail(wir_r, c3__fail);
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}
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u2_chop(a_g, b_w, c_w, 0, sal_r, d);
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return u2_rl_malt(wir_r, sal_r);
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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, cut)(u2_wire wir_r,
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u2_noun cor) // retain
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{
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u2_noun a, b, c, d;
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if ( (u2_no == u2_mean(cor, u2_cv_sam_2, &a,
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u2_cv_sam_12, &b,
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u2_cv_sam_13, &c,
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u2_cv_sam_7, &d, 0)) ||
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(u2_no == u2_stud(a)) ||
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(u2_no == u2_stud(b)) ||
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(u2_no == u2_stud(c)) ||
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(u2_no == u2_stud(d)) )
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{
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return u2_bl_bail(wir_r, c3__exit);
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} else {
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return j2_mbc(Pt3, cut)(wir_r, a, b, c, d);
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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, cut)[] = {
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{ ".2", c3__lite, j2_mb(Pt3, cut), Tier3, u2_none, u2_none },
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{ }
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};
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