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48 lines
957 B
C
48 lines
957 B
C
/* j/2/roll.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_noun
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u2_cqb_roll(u2_noun a,
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u2_noun b)
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{
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if ( 0 == a ) {
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return u2k(u2_cr_at(u2_cv_sam_3, b));
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}
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else if ( u2_no == u2du(a) ) {
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return u2_cm_bail(c3__exit);
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}
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else {
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u2_noun gim = u2k(u2h(a));
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u2_noun zor = u2k(u2_cr_at(u2_cv_sam_3, b));
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u2_noun daz = u2_cn_slam_on(u2k(b), u2nc(gim, zor));
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u2_noun vel = u2_ci_molt(u2k(b), u2_cv_sam_3, daz, 0);
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if ( u2_none == vel ) {
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return u2_cm_bail(c3__exit);
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} else {
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u2_noun hox = u2_cqb_roll(u2t(a), vel);
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u2z(vel);
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return hox;
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}
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}
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}
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u2_noun
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u2_cwb_roll(u2_noun cor)
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{
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u2_noun a, b;
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if ( u2_no == u2_cr_mean(cor, u2_cv_sam_2, &a, u2_cv_sam_3, &b, 0) ) {
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return u2_cm_bail(c3__exit);
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} else {
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return u2_cqb_roll(a, b);
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}
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}
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