Initial commit.

1 files changed, 99 insertions, 0 deletions

diff --git a/gmp-6.3.0/mpq/cmp_ui.c b/gmp-6.3.0/mpq/cmp_ui.c
new file mode 100644
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+++ b/gmp-6.3.0/mpq/cmp_ui.c
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+/* mpq_cmp_ui(u,vn,vd) -- Compare U with Vn/Vd.  Return positive, zero, or
+   negative based on if U > V, U == V, or U < V.  Vn and Vd may have
+   common factors.
+
+Copyright 1993, 1994, 1996, 2000-2003, 2005, 2014, 2018 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
+_mpq_cmp_ui (mpq_srcptr op1, unsigned long int num2, unsigned long int den2)
+{
+  mp_size_t num1_size = SIZ(NUM(op1));
+  mp_size_t den1_size = SIZ(DEN(op1));
+  mp_size_t tmp1_size, tmp2_size;
+  mp_ptr tmp1_ptr, tmp2_ptr;
+  mp_limb_t cy_limb;
+  int cc;
+  TMP_DECL;
+
+#if GMP_NAIL_BITS != 0
+  if ((num2 | den2) > GMP_NUMB_MAX)
+    {
+      mpq_t op2;
+      mpq_init (op2);
+      mpz_set_ui (mpq_numref (op2), num2);
+      mpz_set_ui (mpq_denref (op2), den2);
+      cc = mpq_cmp (op1, op2);
+      mpq_clear (op2);
+      return cc;
+    }
+#endif
+
+  /* need canonical sign to get right result */
+  ASSERT (den1_size > 0);
+
+  if (UNLIKELY (den2 == 0))
+    DIVIDE_BY_ZERO;
+
+  if (num2 == 0)
+    return num1_size;
+  if (num1_size <= 0)
+    return -1;
+
+  /* NUM1 x DEN2 is either TMP1_SIZE limbs or TMP1_SIZE-1 limbs.
+     Same for NUM2 x DEN1 with respect to TMP2_SIZE.  */
+  /* If frac2 <= 1 (i.e. num2 <= den2), shortcut with a simpler
+     condition: num1 > den1. Here we only test sizes. */
+  if (num1_size > den1_size + (num2 > den2))
+    /* NUM1 x DEN2 is surely larger in magnitude than NUM2 x DEN1.  */
+    return num1_size;
+  if (den1_size > num1_size + (den2 > num2))
+    /* NUM1 x DEN2 is surely smaller in magnitude than NUM2 x DEN1.  */
+    return -num1_size;
+
+  TMP_MARK;
+  TMP_ALLOC_LIMBS_2 (tmp1_ptr, num1_size + 1, tmp2_ptr, den1_size + 1);
+
+  cy_limb = mpn_mul_1 (tmp1_ptr, PTR(NUM(op1)), num1_size,
+                       (mp_limb_t) den2);
+  tmp1_ptr[num1_size] = cy_limb;
+  tmp1_size = num1_size + (cy_limb != 0);
+
+  cy_limb = mpn_mul_1 (tmp2_ptr, PTR(DEN(op1)), den1_size,
+                       (mp_limb_t) num2);
+  tmp2_ptr[den1_size] = cy_limb;
+  tmp2_size = den1_size + (cy_limb != 0);
+
+  cc = tmp1_size - tmp2_size;
+  cc = cc != 0 ? cc : mpn_cmp (tmp1_ptr, tmp2_ptr, tmp1_size);
+  TMP_FREE;
+  return cc;
+}