2013-09-29 00:21:18 +04:00
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/* j/2/skim.c
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**
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*/
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#include "all.h"
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2014-09-04 07:10:43 +04:00
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2018-04-27 19:50:20 +03:00
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static u3_noun
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_skim_in(u3j_site* sit_u, u3_noun a)
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2013-09-29 00:21:18 +04:00
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{
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2014-08-20 01:49:16 +04:00
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if ( 0 == a ) {
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2013-09-29 00:21:18 +04:00
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return a;
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}
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2014-11-05 04:18:47 +03:00
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else if ( c3n == u3du(a) ) {
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2014-11-06 03:20:01 +03:00
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return u3m_bail(c3__exit);
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2013-09-29 00:21:18 +04:00
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} else {
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2018-04-27 19:50:20 +03:00
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u3_noun hoz = u3j_gate_slam(sit_u, u3k(u3h(a)));
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u3_noun vyr = _skim_in(sit_u, u3t(a));
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2013-09-29 00:21:18 +04:00
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2014-04-22 05:22:11 +04:00
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switch ( hoz ) {
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2014-11-05 04:18:47 +03:00
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case c3y: return u3nc(u3k(u3h(a)), vyr);
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2015-08-28 16:25:37 +03:00
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case c3n: return vyr;
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default: u3z(hoz);
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u3z(vyr);
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return u3m_bail(c3__exit);
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2013-09-29 00:21:18 +04:00
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}
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}
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}
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2018-04-27 19:50:20 +03:00
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/* functions
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*/
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u3_noun
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u3qb_skim(u3_noun a,
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u3_noun b)
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{
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u3_noun pro;
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u3j_site sit_u;
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2018-04-30 19:57:09 +03:00
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u3j_gate_prep(&sit_u, u3k(b));
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2018-04-27 19:50:20 +03:00
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pro = _skim_in(&sit_u, a);
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u3j_gate_lose(&sit_u);
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return pro;
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}
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2014-09-06 00:13:24 +04:00
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u3_noun
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2018-04-27 19:50:20 +03:00
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u3wb_skim(u3_noun cor)
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2013-09-29 00:21:18 +04:00
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{
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2014-09-06 00:13:24 +04:00
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u3_noun a, b;
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2013-09-29 00:21:18 +04:00
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2014-11-18 00:56:51 +03:00
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if ( c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0) ) {
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2014-11-06 03:20:01 +03:00
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return u3m_bail(c3__exit);
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2013-09-29 00:21:18 +04:00
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} else {
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2014-11-06 22:13:57 +03:00
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return u3qb_skim(a, b);
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2013-09-29 00:21:18 +04:00
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}
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}
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