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/*
Copyright (C) 2013 Mike Hansen
Copyright (C) 2024 Albin Ahlbäck
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "test_helpers.h"
#include "fq_zech.h"
TEST_FUNCTION_START(fq_zech_inv, state)
{
slong ix, jx;
int result;
for (ix = 0; ix < 100 * flint_test_multiplier(); ix++)
{
fq_zech_ctx_t ctx;
fq_zech_ctx_init_randtest(ctx, state, 1);
for (jx = 0; jx < 10; jx++)
{
fq_zech_t a, b, c;
int type;
fq_zech_init(a, ctx);
fq_zech_init(b, ctx);
fq_zech_init(c, ctx);
fq_zech_randtest_not_zero(a, state, ctx);
type = n_randint(state, 2);
if (type == 0)
{
/* Check aliasing: a = ~a */
fq_zech_set(b, a, ctx);
fq_zech_inv(c, b, ctx);
fq_zech_inv(b, b, ctx);
result = (fq_zech_equal(b, c, ctx));
}
else
{
/* Check a * ~a == 1 for units */
fq_zech_inv(b, a, ctx);
fq_zech_mul(c, a, b, ctx);
result = (fq_zech_is_one(c, ctx));
}
if (!result)
{
flint_printf("FAIL:\n\n");
fq_zech_ctx_print(ctx);
flint_printf("\n");
flint_printf("a = "), fq_zech_print_pretty(a, ctx), flint_printf("\n");
flint_printf("b = "), fq_zech_print_pretty(b, ctx), flint_printf("\n");
flint_printf("c = "), fq_zech_print_pretty(c, ctx), flint_printf("\n");
fq_zech_ctx_print(ctx);
flint_abort();
}
fq_zech_clear(a, ctx);
fq_zech_clear(b, ctx);
fq_zech_clear(c, ctx);
}
fq_zech_ctx_clear(ctx);
}
TEST_FUNCTION_END(state);
}