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/tests/mpf/t-set_q.c | 126 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 gmp-6.3.0/tests/mpf/t-set_q.c

(limited to 'gmp-6.3.0/tests/mpf/t-set_q.c')

diff --git a/gmp-6.3.0/tests/mpf/t-set_q.c b/gmp-6.3.0/tests/mpf/t-set_q.c
new file mode 100644
index 0000000..86dec6e
--- /dev/null
+++ b/gmp-6.3.0/tests/mpf/t-set_q.c
@@ -0,0 +1,126 @@
+/* Test mpf_set_q.
+
+Copyright 2004 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 3 of the License,
+or (at your option) any later version.
+
+The GNU MP Library test suite 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 a copy of the GNU General Public License along with
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+void
+check_one (mpf_ptr got, mpq_srcptr q)
+{
+  mpf_t  n, d;
+
+  mpf_set_q (got, q);
+
+  PTR(n) = PTR(&q->_mp_num);
+  SIZ(n) = SIZ(&q->_mp_num);
+  EXP(n) = ABSIZ(&q->_mp_num);
+
+  PTR(d) = PTR(&q->_mp_den);
+  SIZ(d) = SIZ(&q->_mp_den);
+  EXP(d) = ABSIZ(&q->_mp_den);
+
+  if (! refmpf_validate_division ("mpf_set_q", got, n, d))
+    {
+      mp_trace_base = -16;
+      mpq_trace ("   q", q);
+      abort ();
+    }
+}
+
+void
+check_rand (void)
+{
+  unsigned long  min_prec = __GMPF_BITS_TO_PREC (1);
+  gmp_randstate_ptr  rands = RANDS;
+  unsigned long  prec;
+  mpf_t  got;
+  mpq_t  q;
+  int    i;
+
+  mpf_init (got);
+  mpq_init (q);
+
+  for (i = 0; i < 400; i++)
+    {
+      /* result precision */
+      prec = min_prec + gmp_urandomm_ui (rands, 20L);
+      refmpf_set_prec_limbs (got, prec);
+
+      /* num */
+      prec = gmp_urandomm_ui (rands, 20L * GMP_NUMB_BITS);
+      mpz_rrandomb (mpq_numref(q), rands, prec);
+
+      /* possibly negative num */
+      if (gmp_urandomb_ui (rands, 1L))
+        mpz_neg (mpq_numref(q), mpq_numref(q));
+
+      /* den, non-zero */
+      do {
+        prec = gmp_urandomm_ui (rands, 20L * GMP_NUMB_BITS);
+        mpz_rrandomb (mpq_denref(q), rands, prec);
+      } while (mpz_sgn (mpq_denref(q)) <= 0);
+
+      check_one (got, q);
+    }
+
+  mpf_clear (got);
+  mpq_clear (q);
+}
+
+void
+check_various (void)
+{
+  mpf_t got;
+  mpq_t q;
+
+  mpf_init (got);
+  mpq_init (q);
+
+  /* 1/1 == 1 */
+  mpf_set_prec (got, 20L);
+  mpq_set_ui (q, 1L, 1L);
+  mpf_set_q (got, q);
+  MPF_CHECK_FORMAT (got);
+  ASSERT_ALWAYS (mpf_cmp_ui (got, 1L) == 0);
+
+  /* 1/(2^n+1), a case where truncating the divisor would be wrong */
+  mpf_set_prec (got, 500L);
+  mpq_set_ui (q, 1L, 1L);
+  mpz_mul_2exp (mpq_denref(q), mpq_denref(q), 800L);
+  mpz_add_ui (mpq_denref(q), mpq_denref(q), 1L);
+  check_one (got, q);
+
+  mpf_clear (got);
+  mpq_clear (q);
+}
+
+int
+main (void)
+{
+  tests_start ();
+
+  check_various ();
+  check_rand ();
+
+  tests_end ();
+  exit (0);
+}
-- 
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