Imported gcc-4.4.3

[msp430-gcc.git] / gmp / tests / mpf / t-cmp_d.c

diff --git a/gmp/tests/mpf/t-cmp_d.c b/gmp/tests/mpf/t-cmp_d.c
new file mode 100644 (file)
index 0000000..6b5385f
--- /dev/null
+++ b/gmp/tests/mpf/t-cmp_d.c
@@ -0,0 +1,104 @@
+/* Test mpf_cmp_d.
+
+Copyright 2001, 2003, 2003, 2005 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 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.
+
+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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+#define SGN(n)  ((n) > 0 ? 1 : (n) < 0 ? -1 : 0)
+
+void
+check_one (const char *name, mpf_srcptr x, double y, int cmp)
+{
+  int   got;
+
+  got = mpf_cmp_d (x, y);
+  if (SGN(got) != cmp)
+    {
+      int i;
+      printf    ("mpf_cmp_d wrong (from %s)\n", name);
+      printf    ("  got  %d\n", got);
+      printf    ("  want %d\n", cmp);
+      mpf_trace ("  x", x);
+      printf    ("  y %g\n", y);
+      mp_trace_base=-16;
+      mpf_trace ("  x", x);
+      printf    ("  y %g\n", y);
+      printf    ("  y");
+      for (i = 0; i < sizeof(y); i++)
+        printf (" %02X", (unsigned) ((unsigned char *) &y)[i]);
+      printf ("\n");
+      abort ();
+    }
+}
+
+void
+check_infinity (void)
+{
+  mpf_t   x;
+  double  y = tests_infinity_d ();
+  if (y == 0.0)
+    return;
+
+  mpf_init (x);
+
+  /* 0 cmp inf */
+  mpf_set_ui (x, 0L);
+  check_one ("check_infinity", x,  y, -1);
+  check_one ("check_infinity", x, -y,  1);
+
+  /* 123 cmp inf */
+  mpf_set_ui (x, 123L);
+  check_one ("check_infinity", x,  y, -1);
+  check_one ("check_infinity", x, -y,  1);
+
+  /* -123 cmp inf */
+  mpf_set_si (x, -123L);
+  check_one ("check_infinity", x,  y, -1);
+  check_one ("check_infinity", x, -y,  1);
+
+  /* 2^5000 cmp inf */
+  mpf_set_ui (x, 1L);
+  mpf_mul_2exp (x, x, 5000L);
+  check_one ("check_infinity", x,  y, -1);
+  check_one ("check_infinity", x, -y,  1);
+
+  /* -2^5000 cmp inf */
+  mpf_neg (x, x);
+  check_one ("check_infinity", x,  y, -1);
+  check_one ("check_infinity", x, -y,  1);
+
+  mpf_clear (x);
+}
+
+int
+main (int argc, char *argv[])
+{
+  tests_start ();
+
+  check_infinity ();
+
+  tests_end ();
+  exit (0);
+}