e554550755
for file in $(find -name \*.h ) ; do sed -e "s/#include \"gmp\.h\"/#include \"mpir.h\"/g" $file > temp ; mv temp $file ; done for file in $(find -name \*.cc) ; do sed -e "s/#include \"gmp\.h\"/#include \"mpir.h\"/g" $file > temp ; mv temp $file ; done
155 lines
3.4 KiB
C
155 lines
3.4 KiB
C
/* Test mpf_ui_div.
|
|
|
|
Copyright 2004 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 "mpir.h"
|
|
#include "gmp-impl.h"
|
|
#include "tests.h"
|
|
|
|
|
|
void
|
|
check_one (const char *desc, mpf_ptr got, unsigned long u, mpf_srcptr v)
|
|
{
|
|
mpf_t uf;
|
|
mp_limb_t ulimbs[2];
|
|
mp_size_t usize;
|
|
|
|
ulimbs[0] = u & GMP_NUMB_MASK;
|
|
usize = (u != 0);
|
|
#if BITS_PER_ULONG > GMP_NUMB_BITS
|
|
u >>= GMP_NUMB_BITS;
|
|
ulimbs[1] = u;
|
|
usize += (u != 0);
|
|
#endif
|
|
PTR(uf) = ulimbs;
|
|
SIZ(uf) = usize;
|
|
EXP(uf) = usize;
|
|
|
|
if (! refmpf_validate_division ("mpf_ui_div", got, uf, v))
|
|
{
|
|
mp_trace_base = -16;
|
|
printf (" u 0x%lX (%lu)\n", u, u);
|
|
mpf_trace (" v", v);
|
|
printf (" %s\n", desc);
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
void
|
|
check_rand (void)
|
|
{
|
|
unsigned long min_prec = __GMPF_BITS_TO_PREC (1);
|
|
gmp_randstate_ptr rands = RANDS;
|
|
unsigned long prec, u;
|
|
mpf_t got, v;
|
|
int i;
|
|
|
|
mpf_init (got);
|
|
mpf_init (v);
|
|
|
|
for (i = 0; i < 200; i++)
|
|
{
|
|
/* got precision */
|
|
prec = min_prec + gmp_urandomm_ui (rands, 15L);
|
|
refmpf_set_prec_limbs (got, prec);
|
|
|
|
/* u */
|
|
prec = gmp_urandomm_ui (rands, BITS_PER_ULONG+1);
|
|
u = gmp_urandomb_ui (rands, prec);
|
|
|
|
/* v precision */
|
|
prec = min_prec + gmp_urandomm_ui (rands, 15L);
|
|
refmpf_set_prec_limbs (v, prec);
|
|
|
|
/* v, non-zero */
|
|
do {
|
|
mpf_random2 (v, PREC(v), (mp_exp_t) 20);
|
|
} while (SIZ(v) == 0);
|
|
|
|
/* v possibly negative */
|
|
if (gmp_urandomb_ui (rands, 1L))
|
|
mpf_neg (v, v);
|
|
|
|
if ((i % 2) == 0)
|
|
{
|
|
/* src != dst */
|
|
mpf_ui_div (got, u, v);
|
|
check_one ("separate", got, u, v);
|
|
}
|
|
else
|
|
{
|
|
/* src == dst */
|
|
prec = refmpf_set_overlap (got, v);
|
|
mpf_ui_div (got, u, got);
|
|
check_one ("overlap src==dst", got, u, v);
|
|
|
|
mpf_set_prec_raw (got, prec);
|
|
}
|
|
}
|
|
|
|
mpf_clear (got);
|
|
mpf_clear (v);
|
|
}
|
|
|
|
void
|
|
check_various (void)
|
|
{
|
|
mpf_t got, v;
|
|
|
|
mpf_init (got);
|
|
mpf_init (v);
|
|
|
|
/* 100/4 == 25 */
|
|
mpf_set_prec (got, 20L);
|
|
mpf_set_ui (v, 4L);
|
|
mpf_ui_div (got, 100L, v);
|
|
MPF_CHECK_FORMAT (got);
|
|
ASSERT_ALWAYS (mpf_cmp_ui (got, 25L) == 0);
|
|
|
|
{
|
|
/* 1/(2^n+1), a case where truncating the divisor would be wrong */
|
|
unsigned long u = 1L;
|
|
mpf_set_prec (got, 500L);
|
|
mpf_set_prec (v, 900L);
|
|
mpf_set_ui (v, 1L);
|
|
mpf_mul_2exp (v, v, 800L);
|
|
mpf_add_ui (v, v, 1L);
|
|
mpf_ui_div (got, u, v);
|
|
check_one ("1/2^n+1, separate", got, u, v);
|
|
}
|
|
|
|
mpf_clear (got);
|
|
mpf_clear (v);
|
|
}
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
tests_start ();
|
|
|
|
check_various ();
|
|
check_rand ();
|
|
|
|
tests_end ();
|
|
exit (0);
|
|
}
|