Exemple #1
0
  void ARingGFFlint::fromSmallIntegerCoefficients(ElementType& result, const std::vector<long>& poly) const
  {
    fq_nmod_t f;

    fq_nmod_init(f, mBigContext);

#if 0
    printf("input = ");
    for (long i=0; i<poly.size(); i++)
      printf("%ld ", poly[i]);
    printf("\n");
#endif
    for (long i=poly.size()-1; i>=0; i--)
      {
        long a = poly[i];
        if (a == 0) continue;
        if (a < 0) a += characteristic();
        nmod_poly_set_coeff_ui(f, i, a);
      }
#if 0
    printf("  result before reduction = ");
    fq_nmod_print_pretty(f, mBigContext);
    printf("\n");
#endif
    fq_nmod_reduce(f, mBigContext);
#if 0
    printf("  result = ");
    fq_nmod_print_pretty(f, mBigContext);
    printf("\n");
#endif
    fq_zech_set_fq_nmod(&result, f, mContext);
#if 0
    printf("  zech result = %lu", result.value);
    printf("\n");
#endif
    fq_nmod_clear(f, mBigContext);
  }
Exemple #2
0
int
main(void)
{
    int j, i, result;
    fq_zech_ctx_t ctx;
    FLINT_TEST_INIT(state);
    
    flint_printf("mul_fmpz... ");
    fflush(stdout);

    for (j = 0; j < 50; j++)
    {
        fq_zech_ctx_randtest(ctx, state);

        for (i = 0; i < 200; i++)
        {
            fmpz_t x;
            fq_nmod_t aa, bb;
            fq_zech_t a, b, c;

            fq_nmod_init(aa, ctx->fq_nmod_ctx);
            fq_nmod_init(bb, ctx->fq_nmod_ctx);

            fmpz_init(x);
            fmpz_randtest_mod_signed(x, state, fq_zech_ctx_prime(ctx));

            fq_nmod_randtest(aa, state, ctx->fq_nmod_ctx);
            fq_zech_set_fq_nmod(a, aa, ctx);

            fq_nmod_mul_fmpz(bb, aa, x, ctx->fq_nmod_ctx);
            fq_zech_set_fq_nmod(b, bb, ctx);

            fq_zech_mul_fmpz(c, a, x, ctx);

            result = (fq_zech_equal(b, c, ctx));
            if (!result)
            {
                flint_printf("FAIL:\n\n");
                fq_zech_ctx_print(ctx);
                flint_printf("\n");
                flint_printf("aa = ");
                fq_nmod_print_pretty(aa, ctx->fq_nmod_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");
                abort();
            }

            fmpz_clear(x);
            fq_nmod_clear(bb, ctx->fq_nmod_ctx);
            fq_nmod_clear(aa, ctx->fq_nmod_ctx);
        }

        for (i = 0; i < 200; i++)
        {
            fmpz_t x;
            fq_nmod_t aa, bb;
            fq_zech_t a, b;

            fq_nmod_init(aa, ctx->fq_nmod_ctx);
            fq_nmod_init(bb, ctx->fq_nmod_ctx);

            fmpz_init(x);
            fmpz_randtest_mod_signed(x, state, fq_zech_ctx_prime(ctx));

            fq_nmod_randtest(aa, state, ctx->fq_nmod_ctx);
            fq_zech_set_fq_nmod(a, aa, ctx);

            fq_nmod_mul_fmpz(bb, aa, x, ctx->fq_nmod_ctx);
            fq_zech_set_fq_nmod(b, bb, ctx);

            fq_zech_mul_fmpz(a, a, x, ctx);

            result = (fq_zech_equal(b, a, ctx));
            if (!result)
            {
                flint_printf("FAIL:\n\n");
                fq_zech_ctx_print(ctx);
                flint_printf("\n");
                flint_printf("aa = ");
                fq_nmod_print_pretty(aa, ctx->fq_nmod_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");
                abort();
            }

            fmpz_clear(x);
            fq_nmod_clear(bb, ctx->fq_nmod_ctx);
            fq_nmod_clear(aa, ctx->fq_nmod_ctx);
        }

        fq_zech_ctx_clear(ctx);
    }


    FLINT_TEST_CLEANUP(state);
    flint_printf("PASS\n");
    return EXIT_SUCCESS;
}