/* Test that routines allow reusing a source variable as destination.

Copyright 1996, 2000-2002, 2012 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "gmp.h"

#include "gmp-impl.h"

#include "tests.h"

#if __GMP_LIBGMP_DLL

/* FIXME: When linking to a DLL libgmp, mpf_add etc can't be used as

   initializers for global variables because they're effectively global

   variables (function pointers) themselves.  Perhaps calling a test

   function successively with mpf_add etc would be better.  */

int

main (void)

{

  printf ("Test suppressed for windows DLL\n");

  exit (0);

}

#else /* ! DLL_EXPORT */

#ifndef SIZE

#define SIZE 16

#endif

#ifndef EXPO

#define EXPO 32

#endif

void dump_abort (const char *, mpf_t, mpf_t);

typedef void (*dss_func) (mpf_ptr, mpf_srcptr, mpf_srcptr);

dss_func dss_funcs[] =

{

  mpf_div, mpf_add, mpf_mul, mpf_sub,

};

const char *dss_func_names[] =

{

  "mpf_div", "mpf_add", "mpf_mul", "mpf_sub",

};

typedef void (*dsi_func) (mpf_ptr, mpf_srcptr, unsigned long int);

dsi_func dsi_funcs[] =

{

  mpf_div_ui, mpf_add_ui, mpf_mul_ui, mpf_sub_ui,

  mpf_mul_2exp, mpf_div_2exp, mpf_pow_ui

};

const char *dsi_func_names[] =

{

  "mpf_div_ui", "mpf_add_ui", "mpf_mul_ui", "mpf_sub_ui",

  "mpf_mul_2exp", "mpf_div_2exp", "mpf_pow_ui"

};

typedef void (*dis_func) (mpf_ptr, unsigned long int, mpf_srcptr);

dis_func dis_funcs[] =

{

  mpf_ui_div, mpf_ui_sub,

};

const char *dis_func_names[] =

{

  "mpf_ui_div", "mpf_ui_sub",

};

int

main (int argc, char **argv)

{

  int i;

  int pass, reps = 10000;

  mpf_t in1, in2, out1;

  unsigned long int in1i, in2i;

  mpf_t res1, res2, res3;

  mp_size_t bprec = 100;

  tests_start ();

  if (argc > 1)

    {

      reps = strtol (argv[1], 0, 0);

      if (argc > 2)

	bprec = strtol (argv[2], 0, 0);

    }

  mpf_set_default_prec (bprec);

  mpf_init (in1);

  mpf_init (in2);

  mpf_init (out1);

  mpf_init (res1);

  mpf_init (res2);

  mpf_init (res3);

  for (pass = 1; pass <= reps; pass++)

    {

      mpf_random2 (in1, urandom () % SIZE - SIZE/2, urandom () % EXPO);

      mpf_random2 (in2, urandom () % SIZE - SIZE/2, urandom () % EXPO);

      for (i = 0; i < sizeof (dss_funcs) / sizeof (dss_func); i++)

	{

	  /* Don't divide by 0.  */

	  if (i == 0 && mpf_cmp_ui (in2, 0) == 0)

	    continue;

	  (dss_funcs[i]) (res1, in1, in2);

	  mpf_set (out1, in1);

	  (dss_funcs[i]) (out1, out1, in2);

	  mpf_set (res2, out1);

	  mpf_set (out1, in2);

	  (dss_funcs[i]) (out1, in1, out1);

	  mpf_set (res3, out1);

	  if (mpf_cmp (res1, res2) != 0)

	    dump_abort (dss_func_names[i], res1, res2);

	  if (mpf_cmp (res1, res3) != 0)

	    dump_abort (dss_func_names[i], res1, res3);

	}

      in2i = urandom ();

      for (i = 0; i < sizeof (dsi_funcs) / sizeof (dsi_func); i++)

	{

	  unsigned long this_in2i = in2i;

	  /* Don't divide by 0.  */

	  if (dsi_funcs[i] == mpf_div_ui && this_in2i == 0)

	    continue;

	  /* Avoid overflow/underflow in the exponent.  */

	  if (dsi_funcs[i] == mpf_mul_2exp || dsi_funcs[i] == mpf_div_2exp)

	    this_in2i %= 0x100000;

	  else if (dsi_funcs[i] == mpf_pow_ui)

	    this_in2i %= 0x1000;

	  (dsi_funcs[i]) (res1, in1, this_in2i);

	  mpf_set (out1, in1);

	  (dsi_funcs[i]) (out1, out1, this_in2i);

	  mpf_set (res2, out1);

	  if (mpf_cmp (res1, res2) != 0)

	    dump_abort (dsi_func_names[i], res1, res2);

	}

      in1i = urandom ();

      for (i = 0; i < sizeof (dis_funcs) / sizeof (dis_func); i++)

	{

	  /* Don't divide by 0.  */

	  if (dis_funcs[i] == mpf_ui_div

	      && mpf_cmp_ui (in2, 0) == 0)

	    continue;

	  (dis_funcs[i]) (res1, in1i, in2);

	  mpf_set (out1, in2);

	  (dis_funcs[i]) (out1, in1i, out1);

	  mpf_set (res2, out1);

	  if (mpf_cmp (res1, res2) != 0)

	    dump_abort (dis_func_names[i], res1, res2);

	}

    }

  mpf_clear (in1);

  mpf_clear (in2);

  mpf_clear (out1);

  mpf_clear (res1);

  mpf_clear (res2);

  mpf_clear (res3);

  tests_end ();

  exit (0);

}

void

dump_abort (const char *name, mpf_t res1, mpf_t res2)

{

  printf ("failure in %s:\n", name);

  mpf_dump (res1);

  mpf_dump (res2);

  abort ();

}

#if 0

void mpf_abs		(mpf_ptr, mpf_srcptr);

void mpf_sqrt		(mpf_ptr, mpf_srcptr);

void mpf_neg		(mpf_ptr, mpf_srcptr);

#endif

#endif /* ! DLL_EXPORT */