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-rw-r--r--tests/trandom.c153
1 files changed, 1 insertions, 152 deletions
diff --git a/tests/trandom.c b/tests/trandom.c
index 14dafc31e..030737ede 100644
--- a/tests/trandom.c
+++ b/tests/trandom.c
@@ -1,4 +1,4 @@
-/* Test file for the various mpfr_random fonctions.
+/* Test file for mpfr_urandomb
Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by the Arenaire and Cacao projects, INRIA.
@@ -25,153 +25,6 @@ http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
#include "mpfr-test.h"
-static void
-test_random (long nbtests, mp_prec_t prec, int verbose)
-{
- mpfr_t x;
- int *tab, size_tab, k;
- double d, av = 0, var = 0, chi2 = 0, th;
-
- size_tab = (nbtests >= 1000 ? nbtests / 50 : 20);
- tab = (int *) calloc (size_tab, sizeof(int));
- if (tab == NULL)
- {
- fprintf (stderr, "trandom: can't allocate memory in test_random\n");
- exit (1);
- }
-
- mpfr_init2(x, prec);
-
- for (k = 0; k < nbtests; k++)
- {
- mpfr_urandomb (x, RANDS);
- d = mpfr_get_d1 (x); av += d; var += d*d;
- tab[(int)(size_tab * d)]++;
- }
-
- mpfr_clear(x);
- if (!verbose)
- {
- free(tab);
- return;
- }
-
- av /= nbtests;
- var = (var / nbtests) - av*av;
-
- th = (double) nbtests / size_tab;
-
- printf("Average = %.5f\nVariance = %.5f\n", av, var);
- printf("Repartition for random. Each integer should be close to %d.\n",
- (int)th);
-
- for (k = 0; k < size_tab; k++)
- {
- chi2 += (tab[k] - th) * (tab[k] - th) / th;
- printf("%d ", tab[k]);
- if (((k+1) & 7) == 0)
- printf("\n");
- }
-
- printf("\nChi2 statistics value (with %d degrees of freedom) : %.5f\n\n",
- size_tab - 1, chi2);
-
- printf("\n");
-
- free(tab);
- return;
-}
-
-static void
-test_random2 (long nbtests, mp_prec_t prec, int verbose)
-{
- mpfr_t x;
- int *tab, size_tab, k, sh, xn;
- double d, av = 0, var = 0, chi2 = 0, th;
-
- size_tab = (nbtests >= 1000 ? nbtests / 50 : 20);
- tab = (int *) calloc (size_tab, sizeof(int));
- if (tab == NULL)
- {
- fprintf (stderr, "trandom: can't allocate memory in test_random2\n");
- exit (1);
- }
-
- mpfr_init2 (x, prec);
- xn = 1 + (prec - 1) / mp_bits_per_limb;
- sh = xn * mp_bits_per_limb - prec;
-
- for (k = 0; k < nbtests; k++)
- {
- mpfr_random2 (x, xn, 0);
- /* check that lower bits are zero */
- if (MPFR_MANT(x)[0] & MPFR_LIMB_MASK(sh))
- {
- printf ("Error: mpfr_random2() returns invalid numbers:\n");
- mpfr_print_binary (x); puts ("");
- exit (1);
- }
-
- /* check that the number is normalized */
- if (! (MPFR_MANT(x)[MPFR_LIMB_SIZE(x) - 1] >> (BITS_PER_MP_LIMB - 1)))
- {
- printf ("Error: mpfr_random2() returns unnormalized numbers:\n");
- mpfr_print_binary (x); puts ("");
- exit (1);
- }
-
- /* check that exponent is in correct range */
- if (mpfr_get_exp (x) != 0)
- {
- printf ("Error: mpfr_random2 (.., .., 0) does not return"
- " a 0 exponent:\n");
- mpfr_print_binary (x); puts ("");
- exit (1);
- }
- d = mpfr_get_d1 (x); av += d; var += d*d;
- if (d < 1)
- tab[(int)(size_tab * d)]++;
- }
-
- /* test size=0 */
- mpfr_random2 (x, 0, 0);
- MPFR_ASSERTN (mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_POS (x));
- mpfr_set_si (x, -1, MPFR_RNDN); /* x is negative */
- mpfr_random2 (x, 0, 0);
- MPFR_ASSERTN (mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_POS (x));
-
- /* test size < 0 */
- mpfr_random2 (x, -1, 0);
- MPFR_ASSERTN (MPFR_IS_NEG (x) && MPFR_EXP (x) == 0);
-
- mpfr_clear (x);
- if (!verbose)
- {
- free(tab);
- return;
- }
-
- av /= nbtests;
- var = (var / nbtests) - av*av;
-
- th = (double)nbtests / size_tab;
- printf("Average = %.5f\nVariance = %.5f\n", av, var);
- printf("Repartition for random2 (taking only values < 1 into account.\n");
-
- for (k = 0; k < size_tab; k++)
- {
- chi2 += (tab[k] - th) * (tab[k] - th) / th;
- printf("%d ", tab[k]);
- if (((k+1) & 7) == 0)
- printf("\n");
- }
-
- printf("\nChi2 statistics value (with %d degrees of freedom) : %.5f\n\n",
- size_tab - 1, chi2);
-
- free(tab);
- return;
-}
static void
test_urandomb (long nbtests, mp_prec_t prec, int verbose)
@@ -275,14 +128,10 @@ main (int argc, char *argv[])
else
prec = atol(argv[2]);
- test_random (nbtests, prec, verbose);
- test_random2 (nbtests, prec, verbose);
test_urandomb (nbtests, prec, verbose);
if (argc == 1) /* check also small precision */
{
- test_random (nbtests, 2, 0);
- test_random2 (nbtests, 2, 0);
test_urandomb (nbtests, 2, 0);
}