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- /* mpz_cmp_si(u,v) -- Compare an integer U with a single-word int V.
- Return positive, zero, or negative based on if U > V, U == V, or U < V.
-
- Copyright (C) 1991 Free Software Foundation, Inc.
-
- This file is part of the GNU MP Library.
-
- The GNU MP Library is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- The GNU MP Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with the GNU MP Library; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "gmp.h"
- #include "gmp-impl.h"
-
- int
- #ifdef __STDC__
- mpz_cmp_si (const MP_INT *u, signed long int v_digit)
- #else
- mpz_cmp_si (u, v_digit)
- const MP_INT *u;
- signed long int v_digit;
- #endif
- {
- mp_size usize = u->size;
- mp_size vsize;
- mp_limb u_digit;
-
- vsize = 0;
- if (v_digit > 0)
- vsize = 1;
- else if (v_digit < 0)
- {
- vsize = -1;
- v_digit = -v_digit;
- }
-
- if (usize != vsize)
- return usize - vsize;
-
- if (usize == 0)
- return 0;
-
- u_digit = u->d[0];
-
- if (u_digit == v_digit)
- return 0;
-
- if ((u_digit < v_digit) == (usize < 0))
- return 1;
- else
- return -1;
- }
-