arb/fmprb/sub.c
2012-09-02 06:09:40 +02:00

71 lines
2 KiB
C

/*=============================================================================
This file is part of ARB.
ARB 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 2 of the License, or
(at your option) any later version.
ARB 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 ARB; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2012 Fredrik Johansson
******************************************************************************/
#include "fmprb.h"
void
fmprb_sub(fmprb_t z, const fmprb_t x, const fmprb_t y, long prec)
{
long r;
fmpr_add(fmprb_radref(z), fmprb_radref(x), fmprb_radref(y), FMPRB_RAD_PREC, FMPR_RND_UP);
r = fmpr_sub(fmprb_midref(z), fmprb_midref(x), fmprb_midref(y), prec, FMPR_RND_DOWN);
fmpr_add_error_result(fmprb_radref(z), fmprb_radref(z), fmprb_midref(z),
r, FMPRB_RAD_PREC, FMPR_RND_UP);
fmprb_adjust(z);
}
void
fmprb_sub_ui(fmprb_t z, const fmprb_t x, ulong y, long prec)
{
fmprb_t t;
fmprb_init(t);
fmprb_set_ui(t, y);
fmprb_sub(z, x, t, prec);
fmprb_clear(t);
}
void
fmprb_sub_si(fmprb_t z, const fmprb_t x, long y, long prec)
{
fmprb_t t;
fmprb_init(t);
fmprb_set_si(t, y);
fmprb_sub(z, x, t, prec);
fmprb_clear(t);
}
void
fmprb_sub_fmpz(fmprb_t z, const fmprb_t x, const fmpz_t y, long prec)
{
fmprb_t t;
fmprb_init(t);
fmprb_set_fmpz(t, y);
fmprb_sub(z, x, t, prec);
fmprb_clear(t);
}