Exemple #1
0
  void divide(ElementType& result,
              const ElementType& a,
              const ElementType& b) const
  {
    // We need to handle the case when result is a, or b.
    // This is why we use the temporary value 'c'.
    ElementType c;
    init(c);
#if 0
      printf("entering divide\n");
      printf("  a = ");
      fq_zech_print_pretty(&a, mContext);
      printf("\n  b = ");
      fq_zech_print_pretty(&b, mContext);
#endif
    assert(not is_zero(b));
    invert(c, b);
#if 0
      printf("\n  1/b = ");
      fq_zech_print_pretty(&c, mContext);
#endif
    mult(result, c, a);
#if 0
      printf("\n  a/b = ");
      fq_zech_print_pretty(&result, mContext);
      printf("\n");
#endif
    clear(c);
  }
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;
}