274 lines
7.3 KiB
C
274 lines
7.3 KiB
C
/* Test mpf_trunc, mpf_ceil, mpf_floor.
|
|
|
|
Copyright 2001, 2002 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
#include "tests.h"
|
|
|
|
|
|
void
|
|
check_print (mpf_srcptr src, mpf_srcptr got, mpf_srcptr want)
|
|
{
|
|
mp_trace_base = 16;
|
|
mpf_trace ("src ", src);
|
|
mpf_trace ("got ", got);
|
|
mpf_trace ("want", want);
|
|
|
|
printf ("got size=%d exp=%ld\n", SIZ(got), EXP(got));
|
|
mpn_trace (" limbs=", PTR(got), (mp_size_t) ABSIZ(got));
|
|
|
|
printf ("want size=%d exp=%ld\n", SIZ(want), EXP(want));
|
|
mpn_trace (" limbs=", PTR(want), (mp_size_t) ABSIZ(want));
|
|
}
|
|
|
|
void
|
|
check_one (mpf_srcptr src, mpf_srcptr trunc, mpf_srcptr ceil, mpf_srcptr floor)
|
|
{
|
|
mpf_t got;
|
|
|
|
mpf_init2 (got, mpf_get_prec (trunc));
|
|
ASSERT_ALWAYS (PREC(got) == PREC(trunc));
|
|
ASSERT_ALWAYS (PREC(got) == PREC(ceil));
|
|
ASSERT_ALWAYS (PREC(got) == PREC(floor));
|
|
|
|
#define CHECK_SEP(name, fun, want) \
|
|
mpf_set_ui (got, 54321L); /* initial junk */ \
|
|
fun (got, src); \
|
|
MPF_CHECK_FORMAT (got); \
|
|
if (mpf_cmp (got, want) != 0) \
|
|
{ \
|
|
printf ("%s wrong\n", name); \
|
|
check_print (src, got, want); \
|
|
abort (); \
|
|
}
|
|
|
|
CHECK_SEP ("mpf_trunc", mpf_trunc, trunc);
|
|
CHECK_SEP ("mpf_ceil", mpf_ceil, ceil);
|
|
CHECK_SEP ("mpf_floor", mpf_floor, floor);
|
|
|
|
#define CHECK_INPLACE(name, fun, want) \
|
|
mpf_set (got, src); \
|
|
fun (got, got); \
|
|
MPF_CHECK_FORMAT (got); \
|
|
if (mpf_cmp (got, want) != 0) \
|
|
{ \
|
|
printf ("%s wrong\n", name); \
|
|
check_print (src, got, want); \
|
|
abort (); \
|
|
}
|
|
|
|
CHECK_INPLACE ("mpf_trunc", mpf_trunc, trunc);
|
|
|
|
/* Can't do these unconditionally in case truncation by mpf_set strips
|
|
some low non-zero limbs which would have rounded the result. */
|
|
if (ABSIZ(src) <= PREC(trunc)+1)
|
|
{
|
|
CHECK_INPLACE ("mpf_ceil", mpf_ceil, ceil);
|
|
CHECK_INPLACE ("mpf_floor", mpf_floor, floor);
|
|
}
|
|
|
|
mpf_clear (got);
|
|
}
|
|
|
|
void
|
|
check_all (mpf_ptr src, mpf_ptr trunc, mpf_ptr ceil, mpf_ptr floor)
|
|
{
|
|
/* some of these values are generated with direct field assignments */
|
|
MPF_CHECK_FORMAT (src);
|
|
MPF_CHECK_FORMAT (trunc);
|
|
MPF_CHECK_FORMAT (ceil);
|
|
MPF_CHECK_FORMAT (floor);
|
|
|
|
check_one (src, trunc, ceil, floor);
|
|
|
|
mpf_neg (src, src);
|
|
mpf_neg (trunc, trunc);
|
|
mpf_neg (ceil, ceil);
|
|
mpf_neg (floor, floor);
|
|
check_one (src, trunc, floor, ceil);
|
|
}
|
|
|
|
void
|
|
check_various (void)
|
|
{
|
|
mpf_t src, trunc, ceil, floor;
|
|
int n, i;
|
|
|
|
mpf_init2 (src, 512L);
|
|
mpf_init2 (trunc, 256L);
|
|
mpf_init2 (ceil, 256L);
|
|
mpf_init2 (floor, 256L);
|
|
|
|
/* 0 */
|
|
mpf_set_ui (src, 0L);
|
|
mpf_set_ui (trunc, 0L);
|
|
mpf_set_ui (ceil, 0L);
|
|
mpf_set_ui (floor, 0L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* 1 */
|
|
mpf_set_ui (src, 1L);
|
|
mpf_set_ui (trunc, 1L);
|
|
mpf_set_ui (ceil, 1L);
|
|
mpf_set_ui (floor, 1L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* 2^1024 */
|
|
mpf_set_ui (src, 1L);
|
|
mpf_mul_2exp (src, src, 1024L);
|
|
mpf_set (trunc, src);
|
|
mpf_set (ceil, src);
|
|
mpf_set (floor, src);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* 1/2^1024, fraction only */
|
|
mpf_set_ui (src, 1L);
|
|
mpf_div_2exp (src, src, 1024L);
|
|
mpf_set_si (trunc, 0L);
|
|
mpf_set_si (ceil, 1L);
|
|
mpf_set_si (floor, 0L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* 1/2 */
|
|
mpf_set_ui (src, 1L);
|
|
mpf_div_2exp (src, src, 1L);
|
|
mpf_set_si (trunc, 0L);
|
|
mpf_set_si (ceil, 1L);
|
|
mpf_set_si (floor, 0L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* 123+1/2^64 */
|
|
mpf_set_ui (src, 1L);
|
|
mpf_div_2exp (src, src, 64L);
|
|
mpf_add_ui (src, src, 123L);
|
|
mpf_set_si (trunc, 123L);
|
|
mpf_set_si (ceil, 124L);
|
|
mpf_set_si (floor, 123L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* integer of full prec+1 limbs, unchanged */
|
|
n = PREC(trunc)+1;
|
|
ASSERT_ALWAYS (n <= PREC(src)+1);
|
|
EXP(src) = n;
|
|
SIZ(src) = n;
|
|
for (i = 0; i < SIZ(src); i++)
|
|
PTR(src)[i] = i+100;
|
|
mpf_set (trunc, src);
|
|
mpf_set (ceil, src);
|
|
mpf_set (floor, src);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* full prec+1 limbs, 1 trimmed for integer */
|
|
n = PREC(trunc)+1;
|
|
ASSERT_ALWAYS (n <= PREC(src)+1);
|
|
EXP(src) = n-1;
|
|
SIZ(src) = n;
|
|
for (i = 0; i < SIZ(src); i++)
|
|
PTR(src)[i] = i+200;
|
|
EXP(trunc) = n-1;
|
|
SIZ(trunc) = n-1;
|
|
for (i = 0; i < SIZ(trunc); i++)
|
|
PTR(trunc)[i] = i+201;
|
|
mpf_set (floor, trunc);
|
|
mpf_add_ui (ceil, trunc, 1L);
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* prec+3 limbs, 2 trimmed for size */
|
|
n = PREC(trunc)+3;
|
|
ASSERT_ALWAYS (n <= PREC(src)+1);
|
|
EXP(src) = n;
|
|
SIZ(src) = n;
|
|
for (i = 0; i < SIZ(src); i++)
|
|
PTR(src)[i] = i+300;
|
|
EXP(trunc) = n;
|
|
SIZ(trunc) = n-2;
|
|
for (i = 0; i < SIZ(trunc); i++)
|
|
PTR(trunc)[i] = i+302;
|
|
mpf_set (floor, trunc);
|
|
mpf_set (ceil, trunc);
|
|
PTR(ceil)[0]++;
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* prec+4 limbs, 2 trimmed for size, 1 trimmed for integer */
|
|
n = PREC(trunc)+4;
|
|
ASSERT_ALWAYS (n <= PREC(src)+1);
|
|
EXP(src) = n-1;
|
|
SIZ(src) = n;
|
|
for (i = 0; i < SIZ(src); i++)
|
|
PTR(src)[i] = i+400;
|
|
EXP(trunc) = n-1;
|
|
SIZ(trunc) = n-3;
|
|
for (i = 0; i < SIZ(trunc); i++)
|
|
PTR(trunc)[i] = i+403;
|
|
mpf_set (floor, trunc);
|
|
mpf_set (ceil, trunc);
|
|
PTR(ceil)[0]++;
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* F.F, carry out of ceil */
|
|
EXP(src) = 1;
|
|
SIZ(src) = 2;
|
|
PTR(src)[0] = GMP_NUMB_MAX;
|
|
PTR(src)[1] = GMP_NUMB_MAX;
|
|
EXP(trunc) = 1;
|
|
SIZ(trunc) = 1;
|
|
PTR(trunc)[0] = GMP_NUMB_MAX;
|
|
mpf_set (floor, trunc);
|
|
EXP(ceil) = 2;
|
|
SIZ(ceil) = 1;
|
|
PTR(ceil)[0] = 1;
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
/* FF.F, carry out of ceil */
|
|
EXP(src) = 2;
|
|
SIZ(src) = 3;
|
|
PTR(src)[0] = GMP_NUMB_MAX;
|
|
PTR(src)[1] = GMP_NUMB_MAX;
|
|
PTR(src)[2] = GMP_NUMB_MAX;
|
|
EXP(trunc) = 2;
|
|
SIZ(trunc) = 2;
|
|
PTR(trunc)[0] = GMP_NUMB_MAX;
|
|
PTR(trunc)[1] = GMP_NUMB_MAX;
|
|
mpf_set (floor, trunc);
|
|
EXP(ceil) = 3;
|
|
SIZ(ceil) = 1;
|
|
PTR(ceil)[0] = 1;
|
|
check_all (src, trunc, ceil, floor);
|
|
|
|
mpf_clear (src);
|
|
mpf_clear (trunc);
|
|
mpf_clear (ceil);
|
|
mpf_clear (floor);
|
|
}
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
tests_start ();
|
|
|
|
check_various ();
|
|
|
|
tests_end ();
|
|
exit (0);
|
|
}
|