From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/mpz/fits_s.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 gmp-6.3.0/mpz/fits_s.h (limited to 'gmp-6.3.0/mpz/fits_s.h') diff --git a/gmp-6.3.0/mpz/fits_s.h b/gmp-6.3.0/mpz/fits_s.h new file mode 100644 index 0000000..9fd6a0b --- /dev/null +++ b/gmp-6.3.0/mpz/fits_s.h @@ -0,0 +1,60 @@ +/* int mpz_fits_X_p (mpz_t z) -- test whether z fits signed type X. + +Copyright 1997, 2000-2002 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. + +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-impl.h" + + +int +FUNCTION (mpz_srcptr z) __GMP_NOTHROW +{ + mp_size_t n = SIZ(z); + mp_ptr p = PTR(z); + mp_limb_t limb = p[0]; + + if (n == 0) + return 1; + if (n == 1) + return limb <= MAXIMUM; + if (n == -1) + return limb <= NEG_CAST (mp_limb_t, MINIMUM); +#if GMP_NAIL_BITS != 0 + { + if ((p[1] >> GMP_NAIL_BITS) == 0) + { + limb += p[1] << GMP_NUMB_BITS; + if (n == 2) + return limb <= MAXIMUM; + if (n == -2) + return limb <= NEG_CAST (mp_limb_t, MINIMUM); + } + } +#endif + return 0; +} -- cgit v1.2.3