Imported gcc-4.4.3

[msp430-gcc.git] / mpfr / tests / ttrunc.c

diff --git a/mpfr/tests/ttrunc.c b/mpfr/tests/ttrunc.c
new file mode 100644 (file)
index 0000000..b665558
--- /dev/null
+++ b/mpfr/tests/ttrunc.c
@@ -0,0 +1,133 @@
+/* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor.
+
+Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU 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 GNU 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 GNU MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define SIZEX 100
+
+int
+main (void)
+{
+  int j, k;
+  mpfr_t x, y, z, t, y2, z2, t2;
+
+  tests_start_mpfr ();
+
+  mpfr_inits2 (SIZEX, x, y, z, t, y2, z2, t2, (mpfr_ptr) 0);
+
+  mpfr_set_str1 (x, "0.5");
+  mpfr_ceil(y, x);
+  if (mpfr_cmp_ui (y, 1))
+    {
+      printf ("Error in mpfr_ceil for x=0.5: expected 1.0, got ");
+      mpfr_print_binary(y);
+      putchar('\n');
+      exit (1);
+    }
+
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_ceil(y, x);
+  if (mpfr_cmp_ui(y,0))
+    {
+      printf ("Error in mpfr_ceil for x=0.0: expected 0.0, got ");
+      mpfr_print_binary(y);
+      putchar('\n');
+      exit (1);
+    }
+
+  mpfr_set_ui (x, 1, GMP_RNDN);
+  mpfr_ceil(y, x);
+  if (mpfr_cmp_ui(y,1))
+    {
+      printf ("Error in mpfr_ceil for x=1.0: expected 1.0, got ");
+      mpfr_print_binary(y);
+      putchar('\n');
+      exit (1);
+    }
+
+  for (j=0;j<1000;j++)
+    {
+      mpfr_urandomb (x, RANDS);
+      MPFR_EXP (x) = 2;
+
+      for (k = 2; k <= SIZEX; k++)
+        {
+          mpfr_set_prec(y, k);
+          mpfr_set_prec(y2, k);
+          mpfr_set_prec(z, k);
+          mpfr_set_prec(z2, k);
+          mpfr_set_prec(t, k);
+          mpfr_set_prec(t2, k);
+
+          mpfr_floor(y, x);
+          mpfr_set(y2, x, GMP_RNDD);
+
+          mpfr_trunc(z, x);
+          mpfr_set(z2, x, GMP_RNDZ);
+
+          mpfr_ceil(t, x);
+          mpfr_set(t2, x, GMP_RNDU);
+
+          if (!mpfr_eq(y, y2, k))
+            {
+              printf("Error in floor, x = "); mpfr_print_binary(x);
+              printf("\n");
+              printf("floor(x) = "); mpfr_print_binary(y);
+              printf("\n");
+              printf("round(x, RNDD) = "); mpfr_print_binary(y2);
+              printf("\n");
+              exit(1);
+            }
+
+          if (!mpfr_eq(z, z2, k))
+            {
+              printf("Error in trunc, x = "); mpfr_print_binary(x);
+              printf("\n");
+              printf("trunc(x) = "); mpfr_print_binary(z);
+              printf("\n");
+              printf("round(x, RNDZ) = "); mpfr_print_binary(z2);
+              printf("\n");
+              exit(1);
+            }
+
+          if (!mpfr_eq(y, y2, k))
+            {
+              printf("Error in ceil, x = "); mpfr_print_binary(x);
+              printf("\n");
+              printf("ceil(x) = "); mpfr_print_binary(t);
+              printf("\n");
+              printf("round(x, RNDU) = "); mpfr_print_binary(t2);
+              printf("\n");
+              exit(1);
+            }
+          MPFR_EXP(x)++;
+        }
+    }
+
+  mpfr_clears (x, y, z, t, y2, z2, t2, (mpfr_ptr) 0);
+
+  tests_end_mpfr ();
+  return 0;
+}