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34 lines
614 B
C
34 lines
614 B
C
/* j/6/sift.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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/* boilerplate
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*/
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u3_noun
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u3wfu_sift(
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u3_noun cor)
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{
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u3_noun sut, ref, van;
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if ( (c3n == u3r_mean(cor, u3x_sam, &ref,
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u3x_con, &van,
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0)) ||
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(u3_none == (sut = u3r_at(u3x_sam, van))) )
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{
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return u3m_bail(c3__fail);
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} else {
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return u3qfu_sift(van, sut, ref);
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}
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}
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u3_noun
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u3qfu_sift(u3_noun van,
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u3_noun sut,
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u3_noun ref)
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{
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return u3k(ref);
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}
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