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/* Test gmp_randclass.
Copyright 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU 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 test suite 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 General
Public License for more details.
You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include "gmpxx.h"
#include "gmp-impl.h"
#include "tests.h"
using namespace std;
/* all flavours of initialization */
void
check_randinit (void)
{
{
gmp_randclass r(gmp_randinit_default);
}
{
mpz_class a(0);
unsigned long c = 0, m2exp = 8;
gmp_randclass r(gmp_randinit_lc_2exp, a, c, m2exp);
}
{
unsigned long m2exp = 64;
gmp_randclass r(gmp_randinit_lc_2exp_size, m2exp);
}
/* gmp_randinit_lc_2exp_size, with excessive size */
{
try {
unsigned long m2exp = ULONG_MAX;
gmp_randclass r(gmp_randinit_lc_2exp_size, m2exp);
ASSERT_ALWAYS (0); /* should not be reached */
} catch (length_error&) {
}
}
{
gmp_randclass r(gmp_randinit_mt);
}
/* obsolete, but still available */
{
gmp_randalg_t alg = GMP_RAND_ALG_LC;
unsigned long m2exp = 64;
gmp_randclass r(alg, m2exp);
}
{
gmp_randalg_t alg = GMP_RAND_ALG_DEFAULT;
unsigned long m2exp = 64;
gmp_randclass r(alg, m2exp);
}
{
gmp_randalg_t alg = (gmp_randalg_t) 0;
unsigned long m2exp = 64;
gmp_randclass r(alg, m2exp);
}
}
void
check_mpz (void)
{
{
gmp_randclass r(gmp_randinit_default);
mpz_class a(123);
unsigned int b = 256;
mpz_class c;
r.seed(a);
c = r.get_z_bits(b);
}
{
gmp_randclass r(gmp_randinit_default);
mpz_class a(256);
unsigned long b = 123;
mpz_class c;
r.seed(b);
c = r.get_z_bits(a);
}
{
gmp_randclass r(gmp_randinit_default);
mpz_class a(123), b(256);
mpz_class c;
r.seed(a);
c = r.get_z_range(b);
}
}
void
check_mpf (void)
{
{
gmp_randclass r(gmp_randinit_default);
mpz_class a(123);
r.seed(a);
mpf_class b;
b = r.get_f();
mpf_class c(r.get_f());
ASSERT_ALWAYS (c.get_prec() == mpf_get_default_prec());
mpf_class d(r.get_f(),212);
ASSERT_ALWAYS (d.get_prec() >= 212);
}
{
gmp_randclass r(gmp_randinit_default);
int a = 123, b = 198;
r.seed(a);
mpf_class c;
c = r.get_f(b);
ASSERT_ALWAYS (c.get_prec() == mpf_get_default_prec());
mpf_class d(r.get_f(b));
ASSERT_ALWAYS (d.get_prec() >= 198);
mpf_class e(r.get_f(b)-r.get_f());
ASSERT_ALWAYS (e.get_prec() >= 198);
mpf_class f(r.get_f(60),300);
ASSERT_ALWAYS (f.get_prec() >= 300);
}
}
int
main (void)
{
tests_start();
check_randinit();
check_mpz();
check_mpf();
tests_end();
return 0;
}
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