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40 lines
573 B
C
40 lines
573 B
C
/* j/3/bex.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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/* functions
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*/
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u3_noun
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u3qc_bex(u3_atom a)
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{
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mpz_t a_mp;
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if ( !_(u3a_is_cat(a)) ) {
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return u3m_bail(c3__fail);
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}
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else {
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mpz_init_set_ui(a_mp, 1);
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mpz_mul_2exp(a_mp, a_mp, a);
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return u3i_mp(a_mp);
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}
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}
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u3_noun
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u3wc_bex(
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u3_noun cor)
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{
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u3_noun a;
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if ( (u3_none == (a = u3r_at(u3x_sam, cor))) ||
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(c3n == u3ud(a)) )
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{
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return u3m_bail(c3__exit);
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} else {
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return u3qc_bex(a);
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}
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}
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