67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
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/* mpz_cmp_si(u,v) -- Compare an integer U with a single-word int V.
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Return positive, zero, or negative based on if U > V, U == V, or U < V.
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Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "gmp.h"
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#include "gmp-impl.h"
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/* gmp.h defines a macro for mpz_cmp_si. */
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#undef mpz_cmp_si
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int
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#if __STDC__
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mpz_cmp_si (mpz_srcptr u, signed long int v_digit)
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#else
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mpz_cmp_si (u, v_digit)
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mpz_srcptr u;
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signed long int v_digit;
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#endif
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{
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mp_size_t usize = u->_mp_size;
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mp_size_t vsize;
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mp_limb_t u_digit;
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vsize = 0;
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if (v_digit > 0)
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vsize = 1;
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else if (v_digit < 0)
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{
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vsize = -1;
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v_digit = -v_digit;
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}
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if (usize != vsize)
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return usize - vsize;
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if (usize == 0)
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return 0;
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u_digit = u->_mp_d[0];
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if (u_digit == v_digit)
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return 0;
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if (u_digit > v_digit)
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return usize;
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else
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return -usize;
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}
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