mpfr-2.4.1/tests/texp10.c - native_client/nacl-gcc - Git at Google

 /* Test file for mpfr_exp10.

 Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
 Contributed by the Arenaire and Cacao projects, INRIA.

 This file is part of the GNU MPFR Library.

 The GNU MPFR Library is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 2.1 of the License, or (at your
 option) any later version.

 The GNU MPFR Library 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 Lesser General Public
 License for more details.

 You should have received a copy of the GNU Lesser General Public License
 along with the GNU MPFR Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 MA 02110-1301, USA. */

 #include <stdio.h>
 #include <stdlib.h>
 #include <limits.h>

 #include "mpfr-test.h"

 #define TEST_FUNCTION mpfr_exp10
 #define TEST_RANDOM_EMIN -36
 #define TEST_RANDOM_EMAX 36
 #include "tgeneric.c"

 static void
 special_overflow (void)
 {
   mpfr_t x, y;
   int inex;
   mp_exp_t emin, emax;

   emin = mpfr_get_emin ();
   emax = mpfr_get_emax ();

   set_emin (-125);
   set_emax (128);

   mpfr_init2 (x, 24);
   mpfr_init2 (y, 24);

   mpfr_set_str_binary (x, "0.101100100000000000110100E15");
   inex = mpfr_exp10 (y, x, GMP_RNDN);
   if (!mpfr_inf_p (y) || inex <= 0)
     {
       printf ("Overflow error.\n");
       mpfr_dump (y);
       printf ("inex = %d\n", inex);
       exit (1);
     }

   mpfr_clear (y);
   mpfr_clear (x);
   set_emin (emin);
   set_emax (emax);
 }

 static void
 emax_m_eps (void)
 {
   if (mpfr_get_emax () <= LONG_MAX)
     {
       mpfr_t x, y;
       int inex, ov;

       mpfr_init2 (x, sizeof(mp_exp_t) * CHAR_BIT * 4);
       mpfr_init2 (y, 8);
       mpfr_set_si (x, mpfr_get_emax (), GMP_RNDN);

       mpfr_clear_flags ();
       inex = mpfr_exp10 (y, x, GMP_RNDN);
       ov = mpfr_overflow_p ();
       if (!ov || !mpfr_inf_p (y) || inex <= 0)
         {
           printf ("Overflow error for x = emax, GMP_RNDN.\n");
           mpfr_dump (y);
           printf ("inex = %d, %soverflow\n", inex, ov ? "" : "no ");
           exit (1);
         }

       mpfr_clear (x);
       mpfr_clear (y);
     }
 }

 static void
 exp_range (void)
 {
   mpfr_t x;
   mp_exp_t emin;

   emin = mpfr_get_emin ();
   set_emin (3);
   mpfr_init2 (x, 16);
   mpfr_set_ui (x, 4, GMP_RNDN);
   mpfr_exp10 (x, x, GMP_RNDN);
   set_emin (emin);
   if (mpfr_nan_p (x) || mpfr_cmp_ui (x, 10000) != 0)
     {
       printf ("Error in mpfr_exp10 for x = 4, with emin = 3\n");
       printf ("Expected 10000, got ");
       mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
       printf ("\n");
       exit (1);
     }
   mpfr_clear (x);
 }

 static void
 overfl_exp10_0 (void)
 {
   mpfr_t x, y;
   int emax, i, inex, rnd, err = 0;
   mp_exp_t old_emax;

   old_emax = mpfr_get_emax ();

   mpfr_init2 (x, 8);
   mpfr_init2 (y, 8);

   for (emax = -1; emax <= 0; emax++)
     {
       mpfr_set_ui_2exp (y, 1, emax, GMP_RNDN);
       mpfr_nextbelow (y);
       set_emax (emax);  /* 1 is not representable. */
       /* and if emax < 0, 1 - eps is not representable either. */
       for (i = -1; i <= 1; i++)
         RND_LOOP (rnd)
           {
             mpfr_set_si_2exp (x, i, -512 * ABS (i), GMP_RNDN);
             mpfr_clear_flags ();
             inex = mpfr_exp10 (x, x, (mp_rnd_t) rnd);
             if ((i >= 0 || emax < 0 || rnd == GMP_RNDN || rnd == GMP_RNDU) &&
                 ! mpfr_overflow_p ())
               {
                 printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
                         "  The overflow flag is not set.\n",
                         i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
                 err = 1;
               }
             if (rnd == GMP_RNDZ || rnd == GMP_RNDD)
               {
                 if (inex >= 0)
                   {
                     printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
                             "  The inexact value must be negative.\n",
                             i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
                     err = 1;
                   }
                 if (! mpfr_equal_p (x, y))
                   {
                     printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
                             "  Got ", i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
                     mpfr_print_binary (x);
                     printf (" instead of 0.11111111E%d.\n", emax);
                     err = 1;
                   }
               }
             else
               {
                 if (inex <= 0)
                   {
                     printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
                             "  The inexact value must be positive.\n",
                             i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
                     err = 1;
                   }
                 if (! (mpfr_inf_p (x) && MPFR_SIGN (x) > 0))
                   {
                     printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
                             "  Got ", i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
                     mpfr_print_binary (x);
                     printf (" instead of +Inf.\n");
                     err = 1;
                   }
               }
           }
       set_emax (old_emax);
     }

   if (err)
     exit (1);
   mpfr_clear (x);
   mpfr_clear (y);
 }

 int
 main (int argc, char *argv[])
 {
   mpfr_t x, y;
   mp_exp_t emin, emax;
   int inex, ov;

   tests_start_mpfr ();

   special_overflow ();
   emax_m_eps ();
   exp_range ();

   mpfr_init (x);
   mpfr_init (y);

   mpfr_set_ui (x, 4, GMP_RNDN);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (mpfr_cmp_ui (y, 10000) != 0)
     {
       printf ("Error for 10^4, GMP_RNDN\n");
       exit (1);
     }
   mpfr_exp10 (y, x, GMP_RNDD);
   if (mpfr_cmp_ui (y, 10000) != 0)
     {
       printf ("Error for 10^4, GMP_RNDD\n");
       exit (1);
     }
   mpfr_exp10 (y, x, GMP_RNDU);
   if (mpfr_cmp_ui (y, 10000) != 0)
     {
       printf ("Error for 10^4, GMP_RNDU\n");
       exit (1);
     }

   mpfr_set_prec (x, 10);
   mpfr_set_prec (y, 10);
   /* save emin */
   emin = mpfr_get_emin ();
   set_emin (-11);
   mpfr_set_si (x, -4, GMP_RNDN);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) < 0)
     {
       printf ("Error for emin = -11, x = -4, RNDN\n");
       printf ("Expected +0\n");
       printf ("Got      "); mpfr_print_binary (y); puts ("");
       exit (1);
     }
   /* restore emin */
   set_emin (emin);

   /* save emax */
   emax = mpfr_get_emax ();
   set_emax (13);
   mpfr_set_ui (x, 4, GMP_RNDN);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
     {
       printf ("Error for emax = 13, x = 4, RNDN\n");
       printf ("Expected +inf\n");
       printf ("Got      "); mpfr_print_binary (y); puts ("");
       exit (1);
     }
   /* restore emax */
   set_emax (emax);

   MPFR_SET_INF (x);
   MPFR_SET_POS (x);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (!MPFR_IS_INF (y))
     {
       printf ("evaluation of function in INF does not return INF\n");
       exit (1);
     }

   MPFR_CHANGE_SIGN (x);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (!MPFR_IS_ZERO (y))
     {
       printf ("evaluation of function in -INF does not return 0\n");
       exit (1);
     }

   MPFR_SET_NAN (x);
   mpfr_exp10 (y, x, GMP_RNDN);
   if (!MPFR_IS_NAN (y))
     {
       printf ("evaluation of function in NaN does not return NaN\n");
       exit (1);
     }

   if ((mp_exp_unsigned_t) 8 << 31 != 0 ||
       mpfr_get_emax () <= (mp_exp_unsigned_t) 100000 * 100000)
     {
       /* emax <= 10000000000 */
       mpfr_set_prec (x, 40);
       mpfr_set_prec (y, 40);
       mpfr_set_str (x, "3010299957", 10, GMP_RNDN);
       mpfr_clear_flags ();
       inex = mpfr_exp10 (y, x, GMP_RNDN);
       ov = mpfr_overflow_p ();
       if (!(MPFR_IS_INF (y) && MPFR_IS_POS (y) && ov))
         {
           printf ("Overflow error for x = 3010299957, GMP_RNDN.\n");
           mpfr_dump (y);
           printf ("inex = %d, %soverflow\n", inex, ov ? "" : "no ");
           exit (1);
         }
     }

   test_generic (2, 100, 100);

   mpfr_clear (x);
   mpfr_clear (y);

   overfl_exp10_0 ();

   data_check ("data/exp10", mpfr_exp10, "mpfr_exp10");

   tests_end_mpfr ();
   return 0;
 }
	/* Test file for mpfr_exp10.

	Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
	Contributed by the Arenaire and Cacao projects, INRIA.

	This file is part of the GNU MPFR Library.

	The GNU MPFR Library is free software; you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation; either version 2.1 of the License, or (at your
	option) any later version.

	The GNU MPFR Library 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 Lesser General Public
	License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to
	the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
	MA 02110-1301, USA. */

	#include <stdio.h>
	#include <stdlib.h>
	#include <limits.h>

	#include "mpfr-test.h"

	#define TEST_FUNCTION mpfr_exp10
	#define TEST_RANDOM_EMIN -36
	#define TEST_RANDOM_EMAX 36
	#include "tgeneric.c"

	static void
	special_overflow (void)
	{
	mpfr_t x, y;
	int inex;
	mp_exp_t emin, emax;

	emin = mpfr_get_emin ();
	emax = mpfr_get_emax ();

	set_emin (-125);
	set_emax (128);

	mpfr_init2 (x, 24);
	mpfr_init2 (y, 24);

	mpfr_set_str_binary (x, "0.101100100000000000110100E15");
	inex = mpfr_exp10 (y, x, GMP_RNDN);
	if (!mpfr_inf_p (y) \|\| inex <= 0)
	{
	printf ("Overflow error.\n");
	mpfr_dump (y);
	printf ("inex = %d\n", inex);
	exit (1);
	}

	mpfr_clear (y);
	mpfr_clear (x);
	set_emin (emin);
	set_emax (emax);
	}

	static void
	emax_m_eps (void)
	{
	if (mpfr_get_emax () <= LONG_MAX)
	{
	mpfr_t x, y;
	int inex, ov;

	mpfr_init2 (x, sizeof(mp_exp_t) * CHAR_BIT * 4);
	mpfr_init2 (y, 8);
	mpfr_set_si (x, mpfr_get_emax (), GMP_RNDN);

	mpfr_clear_flags ();
	inex = mpfr_exp10 (y, x, GMP_RNDN);
	ov = mpfr_overflow_p ();
	if (!ov \|\| !mpfr_inf_p (y) \|\| inex <= 0)
	{
	printf ("Overflow error for x = emax, GMP_RNDN.\n");
	mpfr_dump (y);
	printf ("inex = %d, %soverflow\n", inex, ov ? "" : "no ");
	exit (1);
	}

	mpfr_clear (x);
	mpfr_clear (y);
	}
	}

	static void
	exp_range (void)
	{
	mpfr_t x;
	mp_exp_t emin;

	emin = mpfr_get_emin ();
	set_emin (3);
	mpfr_init2 (x, 16);
	mpfr_set_ui (x, 4, GMP_RNDN);
	mpfr_exp10 (x, x, GMP_RNDN);
	set_emin (emin);
	if (mpfr_nan_p (x) \|\| mpfr_cmp_ui (x, 10000) != 0)
	{
	printf ("Error in mpfr_exp10 for x = 4, with emin = 3\n");
	printf ("Expected 10000, got ");
	mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
	printf ("\n");
	exit (1);
	}
	mpfr_clear (x);
	}

	static void
	overfl_exp10_0 (void)
	{
	mpfr_t x, y;
	int emax, i, inex, rnd, err = 0;
	mp_exp_t old_emax;

	old_emax = mpfr_get_emax ();

	mpfr_init2 (x, 8);
	mpfr_init2 (y, 8);

	for (emax = -1; emax <= 0; emax++)
	{
	mpfr_set_ui_2exp (y, 1, emax, GMP_RNDN);
	mpfr_nextbelow (y);
	set_emax (emax); /* 1 is not representable. */
	/* and if emax < 0, 1 - eps is not representable either. */
	for (i = -1; i <= 1; i++)
	RND_LOOP (rnd)
	{
	mpfr_set_si_2exp (x, i, -512 * ABS (i), GMP_RNDN);
	mpfr_clear_flags ();
	inex = mpfr_exp10 (x, x, (mp_rnd_t) rnd);
	if ((i >= 0 \|\| emax < 0 \|\| rnd == GMP_RNDN \|\| rnd == GMP_RNDU) &&
	! mpfr_overflow_p ())
	{
	printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
	" The overflow flag is not set.\n",
	i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
	err = 1;
	}
	if (rnd == GMP_RNDZ \|\| rnd == GMP_RNDD)
	{
	if (inex >= 0)
	{
	printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
	" The inexact value must be negative.\n",
	i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
	err = 1;
	}
	if (! mpfr_equal_p (x, y))
	{
	printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
	" Got ", i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
	mpfr_print_binary (x);
	printf (" instead of 0.11111111E%d.\n", emax);
	err = 1;
	}
	}
	else
	{
	if (inex <= 0)
	{
	printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
	" The inexact value must be positive.\n",
	i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
	err = 1;
	}
	if (! (mpfr_inf_p (x) && MPFR_SIGN (x) > 0))
	{
	printf ("Error in overfl_exp10_0 (i = %d, rnd = %s):\n"
	" Got ", i, mpfr_print_rnd_mode ((mp_rnd_t) rnd));
	mpfr_print_binary (x);
	printf (" instead of +Inf.\n");
	err = 1;
	}
	}
	}
	set_emax (old_emax);
	}

	if (err)
	exit (1);
	mpfr_clear (x);
	mpfr_clear (y);
	}

	int
	main (int argc, char *argv[])
	{
	mpfr_t x, y;
	mp_exp_t emin, emax;
	int inex, ov;

	tests_start_mpfr ();

	special_overflow ();
	emax_m_eps ();
	exp_range ();

	mpfr_init (x);
	mpfr_init (y);

	mpfr_set_ui (x, 4, GMP_RNDN);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (mpfr_cmp_ui (y, 10000) != 0)
	{
	printf ("Error for 10^4, GMP_RNDN\n");
	exit (1);
	}
	mpfr_exp10 (y, x, GMP_RNDD);
	if (mpfr_cmp_ui (y, 10000) != 0)
	{
	printf ("Error for 10^4, GMP_RNDD\n");
	exit (1);
	}
	mpfr_exp10 (y, x, GMP_RNDU);
	if (mpfr_cmp_ui (y, 10000) != 0)
	{
	printf ("Error for 10^4, GMP_RNDU\n");
	exit (1);
	}

	mpfr_set_prec (x, 10);
	mpfr_set_prec (y, 10);
	/* save emin */
	emin = mpfr_get_emin ();
	set_emin (-11);
	mpfr_set_si (x, -4, GMP_RNDN);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (mpfr_cmp_ui (y, 0) \|\| mpfr_sgn (y) < 0)
	{
	printf ("Error for emin = -11, x = -4, RNDN\n");
	printf ("Expected +0\n");
	printf ("Got "); mpfr_print_binary (y); puts ("");
	exit (1);
	}
	/* restore emin */
	set_emin (emin);

	/* save emax */
	emax = mpfr_get_emax ();
	set_emax (13);
	mpfr_set_ui (x, 4, GMP_RNDN);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (!mpfr_inf_p (y) \|\| mpfr_sgn (y) < 0)
	{
	printf ("Error for emax = 13, x = 4, RNDN\n");
	printf ("Expected +inf\n");
	printf ("Got "); mpfr_print_binary (y); puts ("");
	exit (1);
	}
	/* restore emax */
	set_emax (emax);

	MPFR_SET_INF (x);
	MPFR_SET_POS (x);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (!MPFR_IS_INF (y))
	{
	printf ("evaluation of function in INF does not return INF\n");
	exit (1);
	}

	MPFR_CHANGE_SIGN (x);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (!MPFR_IS_ZERO (y))
	{
	printf ("evaluation of function in -INF does not return 0\n");
	exit (1);
	}

	MPFR_SET_NAN (x);
	mpfr_exp10 (y, x, GMP_RNDN);
	if (!MPFR_IS_NAN (y))
	{
	printf ("evaluation of function in NaN does not return NaN\n");
	exit (1);
	}

	if ((mp_exp_unsigned_t) 8 << 31 != 0 \|\|
	mpfr_get_emax () <= (mp_exp_unsigned_t) 100000 * 100000)
	{
	/* emax <= 10000000000 */
	mpfr_set_prec (x, 40);
	mpfr_set_prec (y, 40);
	mpfr_set_str (x, "3010299957", 10, GMP_RNDN);
	mpfr_clear_flags ();
	inex = mpfr_exp10 (y, x, GMP_RNDN);
	ov = mpfr_overflow_p ();
	if (!(MPFR_IS_INF (y) && MPFR_IS_POS (y) && ov))
	{
	printf ("Overflow error for x = 3010299957, GMP_RNDN.\n");
	mpfr_dump (y);
	printf ("inex = %d, %soverflow\n", inex, ov ? "" : "no ");
	exit (1);
	}
	}

	test_generic (2, 100, 100);

	mpfr_clear (x);
	mpfr_clear (y);

	overfl_exp10_0 ();

	data_check ("data/exp10", mpfr_exp10, "mpfr_exp10");

	tests_end_mpfr ();
	return 0;
	}