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-rw-r--r--vendor/gmp-6.3.0/mpz/tdiv_q.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpz/tdiv_q.c b/vendor/gmp-6.3.0/mpz/tdiv_q.c
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+/* mpz_tdiv_q -- divide two integers and produce a quotient.
+
+Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2005, 2010, 2012 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"
+#include "longlong.h"
+
+void
+mpz_tdiv_q (mpz_ptr quot, mpz_srcptr num, mpz_srcptr den)
+{
+ mp_size_t ql;
+ mp_size_t ns, ds, nl, dl;
+ mp_ptr np, dp, qp, tp;
+ TMP_DECL;
+
+ ns = SIZ (num);
+ ds = SIZ (den);
+ nl = ABS (ns);
+ dl = ABS (ds);
+ ql = nl - dl + 1;
+
+ if (UNLIKELY (dl == 0))
+ DIVIDE_BY_ZERO;
+
+ if (ql <= 0)
+ {
+ SIZ (quot) = 0;
+ return;
+ }
+
+ qp = MPZ_REALLOC (quot, ql);
+
+ TMP_MARK;
+ dp = PTR (den);
+
+ /* Copy denominator to temporary space if it overlaps with the quotient. */
+ if (dp == qp)
+ {
+ mp_ptr tp;
+ tp = TMP_ALLOC_LIMBS (dl);
+ MPN_COPY (tp, dp, dl);
+ dp = tp;
+ }
+
+ tp = TMP_ALLOC_LIMBS (nl + 1);
+ np = PTR (num);
+ /* Copy numerator to temporary space if it overlaps with the quotient. */
+ if (np == qp)
+ {
+ MPN_COPY (tp, np, nl);
+ /* Overlap dividend and scratch. */
+ np = tp;
+ }
+ mpn_div_q (qp, np, nl, dp, dl, tp);
+
+ ql -= qp[ql - 1] == 0;
+
+ SIZ (quot) = (ns ^ ds) >= 0 ? ql : -ql;
+ TMP_FREE;
+}