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Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpz/cmp_si.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpz/cmp_si.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpz/cmp_si.c b/Build/source/libs/gmp/gmp-6.0.0/mpz/cmp_si.c new file mode 100644 index 00000000000..86251f436ad --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpz/cmp_si.c @@ -0,0 +1,70 @@ +/* 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. + +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. + +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 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/. */ + +#include "gmp.h" +#include "gmp-impl.h" + +int +_mpz_cmp_si (mpz_srcptr u, signed long int v_digit) __GMP_NOTHROW +{ +#if GMP_NAIL_BITS != 0 + /* FIXME. This isn't very pretty. */ + mpz_t tmp; + mp_limb_t tt[2]; + PTR(tmp) = tt; + ALLOC(tmp) = 2; + mpz_set_si (tmp, v_digit); + return mpz_cmp (u, tmp); +#else + + mp_size_t vsize, usize; + + usize = SIZ (u); + vsize = (v_digit > 0) - (v_digit < 0); + + if ((usize == 0) | (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 (u_digit == absv_digit) + return 0; + + if (u_digit > absv_digit) + return usize; + else + return -usize; + } +#endif +} |