mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-23 06:07:41 +01:00
4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/* mpz_fdiv_qr -- Division rounding the quotient towards -infinity.
|
|
The remainder gets the same sign as the denominator.
|
|
|
|
Copyright 1994-1996, 2000, 2001, 2005, 2012 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 either:
|
|
|
|
* the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
or
|
|
|
|
* 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.
|
|
|
|
or both in parallel, as here.
|
|
|
|
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 General Public License
|
|
for more details.
|
|
|
|
You should have received copies of the GNU General Public License and the
|
|
GNU Lesser General Public License along with the GNU MP Library. If not,
|
|
see https://www.gnu.org/licenses/. */
|
|
|
|
#include "gmp-impl.h"
|
|
|
|
void
|
|
mpz_fdiv_qr (mpz_ptr quot, mpz_ptr rem, mpz_srcptr dividend, mpz_srcptr divisor)
|
|
{
|
|
mp_size_t divisor_size = SIZ (divisor);
|
|
mp_size_t xsize;
|
|
mpz_t temp_divisor; /* N.B.: lives until function returns! */
|
|
TMP_DECL;
|
|
|
|
TMP_MARK;
|
|
|
|
/* We need the original value of the divisor after the quotient and
|
|
remainder have been preliminary calculated. We have to copy it to
|
|
temporary space if it's the same variable as either QUOT or REM. */
|
|
if (quot == divisor || rem == divisor)
|
|
{
|
|
MPZ_TMP_INIT (temp_divisor, ABS (divisor_size));
|
|
mpz_set (temp_divisor, divisor);
|
|
divisor = temp_divisor;
|
|
}
|
|
|
|
xsize = SIZ (dividend) ^ divisor_size;;
|
|
mpz_tdiv_qr (quot, rem, dividend, divisor);
|
|
|
|
if (xsize < 0 && SIZ (rem) != 0)
|
|
{
|
|
mpz_sub_ui (quot, quot, 1L);
|
|
mpz_add (rem, rem, divisor);
|
|
}
|
|
|
|
TMP_FREE;
|
|
}
|