Imported gcc-4.4.3

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

diff --git a/mpfr/tests/tsqr.c b/mpfr/tests/tsqr.c
new file mode 100644 (file)
index 0000000..9b41f39
--- /dev/null
+++ b/mpfr/tests/tsqr.c
@@ -0,0 +1,139 @@
+/* Test file for mpfr_sqr.
+
+Copyright 2004, 2005, 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 TEST_FUNCTION mpfr_sqr
+#include "tgeneric.c"
+
+static int
+inexact_sign (int x)
+{
+  return (x < 0) ? -1 : (x > 0);
+}
+
+static void
+error1 (mp_rnd_t rnd, mpfr_prec_t prec,
+        mpfr_t in, mpfr_t outmul, mpfr_t outsqr)
+{
+  printf("ERROR: for %s and prec=%lu\nINPUT=", mpfr_print_rnd_mode(rnd), prec);
+  mpfr_dump(in);
+  printf("OutputMul="); mpfr_dump(outmul);
+  printf("OutputSqr="); mpfr_dump(outsqr);
+  exit(1);
+}
+
+static void
+error2 (mp_rnd_t rnd, mpfr_prec_t prec, mpfr_t in, mpfr_t out,
+        int inexactmul, int inexactsqr)
+{
+  printf("ERROR: for %s and prec=%lu\nINPUT=", mpfr_print_rnd_mode(rnd), prec);
+  mpfr_dump(in);
+  printf("Output="); mpfr_dump(out);
+  printf("InexactMul= %d InexactSqr= %d\n", inexactmul, inexactsqr);
+  exit(1);
+}
+
+static void
+check_random (mpfr_prec_t p)
+{
+  mpfr_t x,y,z;
+  int r;
+  int i, inexact1, inexact2;
+
+  mpfr_inits2 (p, x, y, z, (mpfr_ptr) 0);
+  for(i = 0 ; i < 500 ; i++)
+    {
+      mpfr_urandomb (x, RANDS);
+      if (MPFR_IS_PURE_FP(x))
+        for (r = 0 ; r < GMP_RND_MAX ; r++)
+          {
+            inexact1 = mpfr_mul (y, x, x, (mp_rnd_t) r);
+            inexact2 = mpfr_sqr (z, x, (mp_rnd_t) r);
+            if (mpfr_cmp (y, z))
+              error1 ((mp_rnd_t) r,p,x,y,z);
+            if (inexact_sign (inexact1) != inexact_sign (inexact2))
+              error2 ((mp_rnd_t) r,p,x,y,inexact1,inexact2);
+          }
+    }
+  mpfr_clears (x, y, z, (mpfr_ptr) 0);
+}
+
+static void
+check_special (void)
+{
+  mpfr_t x, y;
+  mp_exp_t emin;
+
+  mpfr_init (x);
+  mpfr_init (y);
+
+  mpfr_set_nan (x);
+  mpfr_sqr (y, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_nan_p (y));
+
+  mpfr_set_inf (x, 1);
+  mpfr_sqr (y, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (y) && mpfr_sgn (y) > 0);
+
+  mpfr_set_inf (x, -1);
+  mpfr_sqr (y, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (y) && mpfr_sgn (y) > 0);
+
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_sqr (y, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_zero_p (y));
+
+  emin = mpfr_get_emin ();
+  mpfr_set_emin (0);
+  mpfr_set_ui (x, 1, GMP_RNDN);
+  mpfr_div_2ui (x, x, 1, GMP_RNDN);
+  MPFR_ASSERTN (!mpfr_zero_p (x));
+  mpfr_sqr (y, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_zero_p (y));
+  mpfr_set_emin (emin);
+
+  mpfr_clear (y);
+  mpfr_clear (x);
+}
+
+int
+main (void)
+{
+  mpfr_prec_t p;
+
+  tests_start_mpfr ();
+
+  check_special ();
+  for (p = 2; p < 200; p++)
+    check_random (p);
+
+  test_generic (2, 200, 15);
+  data_check ("data/sqr", mpfr_sqr, "mpfr_sqr");
+  bad_cases (mpfr_sqr, mpfr_sqrt, "mpfr_sqr", 8, -256, 255, 4, 128, 800, 50);
+
+  tests_end_mpfr ();
+  return 0;
+}