63 lines
1.5 KiB
C
63 lines
1.5 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 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 General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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The GNU MP Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU MP Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "gmp.h"
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#include "gmp-impl.h"
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int
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#ifdef __STDC__
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mpz_cmp_si (const MP_INT *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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const MP_INT *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 usize = u->size;
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mp_size vsize;
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mp_limb 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->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) == (usize < 0))
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return 1;
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else
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return -1;
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}
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