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-rw-r--r--gmp/mpz/cmp_si.c72
1 files changed, 34 insertions, 38 deletions
diff --git a/gmp/mpz/cmp_si.c b/gmp/mpz/cmp_si.c
index 86251f436a..f53932e139 100644
--- a/gmp/mpz/cmp_si.c
+++ b/gmp/mpz/cmp_si.c
@@ -1,40 +1,34 @@
/* 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 1991, 1993-1996, 2000-2002, 2012, 2013 Free Software Foundation, Inc.
+Copyright 1991, 1993, 1994, 1995, 1996, 2000, 2001, 2002 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 either:
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
-or
-
- * the GNU General Public License as published by the Free Software
- Foundation; either version 2 of the License, or (at your option) any
- later version.
-
-or both in parallel, as here.
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, 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.
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+License for more details.
-You should have received copies of the GNU General Public License and the
-GNU Lesser General Public License along with the GNU MP Library. If not,
-see https://www.gnu.org/licenses/. */
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
int
-_mpz_cmp_si (mpz_srcptr u, signed long int v_digit) __GMP_NOTHROW
+_mpz_cmp_si (mpz_srcptr u, signed long int v_digit)
{
+ mp_size_t usize = u->_mp_size;
+ mp_size_t vsize;
+ mp_limb_t u_digit;
+
#if GMP_NAIL_BITS != 0
/* FIXME. This isn't very pretty. */
mpz_t tmp;
@@ -43,28 +37,30 @@ _mpz_cmp_si (mpz_srcptr u, signed long int v_digit) __GMP_NOTHROW
ALLOC(tmp) = 2;
mpz_set_si (tmp, v_digit);
return mpz_cmp (u, tmp);
-#else
-
- mp_size_t vsize, usize;
+#endif
- usize = SIZ (u);
- vsize = (v_digit > 0) - (v_digit < 0);
+ vsize = 0;
+ if (v_digit > 0)
+ vsize = 1;
+ else if (v_digit < 0)
+ {
+ vsize = -1;
+ v_digit = -v_digit;
+ }
- if ((usize == 0) | (usize != vsize))
+ if (usize != vsize)
return usize - vsize;
- else {
- mp_limb_t u_digit, absv_digit;
- u_digit = PTR (u)[0];
- absv_digit = ABS_CAST (unsigned long, v_digit);
+ if (usize == 0)
+ return 0;
- if (u_digit == absv_digit)
- return 0;
+ u_digit = u->_mp_d[0];
- if (u_digit > absv_digit)
- return usize;
- else
- return -usize;
- }
-#endif
+ if (u_digit == (mp_limb_t) (unsigned long) v_digit)
+ return 0;
+
+ if (u_digit > (mp_limb_t) (unsigned long) v_digit)
+ return usize;
+ else
+ return -usize;
}