Added tests for mpfr_greater_p, mpfr_greaterequal_p, mpfr_less_p,

mpfr_lessequal_p, mpfr_lessgreater_p, mpfr_equal_p, mpfr_unordered_p.


git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@2446 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 133 insertions, 0 deletions

diff --git a/tests/tcomparisons.c b/tests/tcomparisons.c
new file mode 100644
index 000000000..0de9e6b70
--- /dev/null
+++ b/tests/tcomparisons.c
@@ -0,0 +1,133 @@
+/* Test file for mpfr_greater_p, mpfr_greaterequal_p, mpfr_less_p,
+   mpfr_lessequal_p, mpfr_lessgreater_p, mpfr_equal_p, mpfr_unordered_p
+   functions.
+
+Copyright 2003 Free Software Foundation.
+
+This file is part of the MPFR Library.
+
+The MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The MPFR 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "mpfr.h"
+#include "mpfr-impl.h"
+#include "mpfr-test.h"
+
+static void
+cmp_tests (void)
+{
+  mpfr_t x, y;
+  long i;
+
+  mpfr_inits (x, y, (void *) 0);
+  for (i = 0; i < 80000; i++)
+    {
+      mp_prec_t precx, precy;
+      int signx, signy, cmp;
+      unsigned int cmpbool = 0;
+
+      precx = (randlimb () % 17) * 11 + MPFR_PREC_MIN;
+      precy = (randlimb () % 17) * 11 + MPFR_PREC_MIN;
+      mpfr_set_prec (x, precx);
+      mpfr_set_prec (y, precy);
+      mpfr_random (x);
+      mpfr_random (y);
+      signx = randlimb () & 1;
+      signy = randlimb () % 256 ? signx : 1 - signx;
+      /* signy = signx most of the time (most interesting case) */
+      if (signx)
+        mpfr_neg (x, x, GMP_RNDN);
+      if (signy)
+        mpfr_neg (y, y, GMP_RNDN);
+      if (i <= 1)
+        mpfr_set_nan (x);
+      if (i == 0 || i == 2)
+        mpfr_set_nan (y);
+      if (mpfr_greater_p (x, y))
+        cmpbool |= 0x01;
+      if (mpfr_greaterequal_p (x, y))
+        cmpbool |= 0x02;
+      if (mpfr_less_p (x, y))
+        cmpbool |= 0x04;
+      if (mpfr_lessequal_p (x, y))
+        cmpbool |= 0x08;
+      if (mpfr_lessgreater_p (x, y))
+        cmpbool |= 0x10;
+      if (mpfr_equal_p (x, y))
+        cmpbool |= 0x20;
+      if (mpfr_unordered_p (x, y))
+        cmpbool |= 0x40;
+      if ((i <= 2 && cmpbool != 0x40) ||
+          (i > 2 && (cmp = mpfr_cmp (x, y),
+                     (cmp == 0 && cmpbool != 0x2a) ||
+                     (cmp < 0 && cmpbool != 0x1c) ||
+                     (cmp > 0 && cmpbool != 0x13))))
+        {
+          printf ("Error in cmp_tests for\nx = ");
+          mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
+          printf (" and\ny = ");
+          mpfr_out_str (stdout, 2, 0, y, GMP_RNDN);
+          printf ("\n");
+          exit (1);
+        }
+    }
+  mpfr_clears (x, y, (void *) 0);
+}
+
+static void
+eq_tests (void)
+{
+  mpfr_t x, y;
+  long i;
+
+  mpfr_inits (x, y, (void *) 0);
+  for (i = 0; i < 20000; i++)
+    {
+      mp_prec_t precx;
+
+      precx = (randlimb () % 17) * 11 + MPFR_PREC_MIN;
+      mpfr_set_prec (x, precx);
+      mpfr_set_prec (y, precx + (randlimb () % 64));
+      mpfr_random (x);
+      if (randlimb () & 1)
+        mpfr_neg (x, x, GMP_RNDN);
+      mpfr_set (y, x, GMP_RNDN);  /* exact -> x = y */
+      if (mpfr_greater_p (x, y) || !mpfr_greaterequal_p (x, y) ||
+          mpfr_less_p (x, y) || !mpfr_lessequal_p (x, y) ||
+          mpfr_lessgreater_p (x, y) || !mpfr_equal_p (x, y) ||
+          mpfr_unordered_p (x, y))
+        {
+          printf ("Error in eq_tests for x = ");
+          mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
+          printf ("\n");
+          exit (1);
+        }
+    }
+  mpfr_clears (x, y, (void *) 0);
+}
+
+int
+main (void)
+{
+  tests_start_mpfr ();
+  cmp_tests ();
+  eq_tests ();
+  tests_end_mpfr ();
+  return 0;
+}