From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001
From: Duncan Wilkie <antigravityd@gmail.com>
Date: Sat, 18 Nov 2023 06:11:09 -0600
Subject: Initial commit.

---
 gmp-6.3.0/mpz/lcm_ui.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 gmp-6.3.0/mpz/lcm_ui.c

(limited to 'gmp-6.3.0/mpz/lcm_ui.c')

diff --git a/gmp-6.3.0/mpz/lcm_ui.c b/gmp-6.3.0/mpz/lcm_ui.c
new file mode 100644
index 0000000..1f199b7
--- /dev/null
+++ b/gmp-6.3.0/mpz/lcm_ui.c
@@ -0,0 +1,78 @@
+/* mpz_lcm_ui -- least common multiple of mpz and ulong.
+
+Copyright 2001, 2002, 2004 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_lcm_ui (mpz_ptr r, mpz_srcptr u, unsigned long v)
+{
+  mp_size_t      usize;
+  mp_srcptr      up;
+  mp_ptr         rp;
+  unsigned long  g;
+  mp_limb_t      c;
+
+#if BITS_PER_ULONG > GMP_NUMB_BITS  /* avoid warnings about shift amount */
+  if (v > GMP_NUMB_MAX)
+    {
+      mpz_t vz;
+      mp_limb_t vlimbs[2];
+      vlimbs[0] = v & GMP_NUMB_MASK;
+      vlimbs[1] = v >> GMP_NUMB_BITS;
+      PTR(vz) = vlimbs;
+      SIZ(vz) = 2;
+      mpz_lcm (r, u, vz);
+      return;
+    }
+#endif
+
+  /* result zero if either operand zero */
+  usize = SIZ(u);
+  if (usize == 0 || v == 0)
+    {
+      SIZ(r) = 0;
+      return;
+    }
+  usize = ABS(usize);
+
+  MPZ_REALLOC (r, usize+1);
+
+  up = PTR(u);
+  g = (unsigned long) mpn_gcd_1 (up, usize, (mp_limb_t) v);
+  v /= g;
+
+  rp = PTR(r);
+  c = mpn_mul_1 (rp, up, usize, (mp_limb_t) v);
+  rp[usize] = c;
+  usize += (c != 0);
+  SIZ(r) = usize;
+}
-- 
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