Return to fdiv_q.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpz

Annotation of OpenXM_contrib/gmp/mpz/fdiv_q.c, Revision 1.1.1.1

1.1       maekawa     1: /* mpz_fdiv_q -- Division rounding the quotient towards -infinity.
                      2:    The remainder gets the same sign as the denominator.
                      3:
                      4: Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
                      5:
                      6: This file is part of the GNU MP Library.
                      7:
                      8: The GNU MP Library is free software; you can redistribute it and/or modify
                      9: it under the terms of the GNU Library General Public License as published by
                     10: the Free Software Foundation; either version 2 of the License, or (at your
                     11: option) any later version.
                     12:
                     13: The GNU MP Library is distributed in the hope that it will be useful, but
                     14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
                     16: License for more details.
                     17:
                     18: You should have received a copy of the GNU Library General Public License
                     19: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     21: MA 02111-1307, USA. */
                     22:
                     23: #include "gmp.h"
                     24: #include "gmp-impl.h"
                     25:
                     26: void
                     27: #if __STDC__
                     28: mpz_fdiv_q (mpz_ptr quot, mpz_srcptr dividend, mpz_srcptr divisor)
                     29: #else
                     30: mpz_fdiv_q (quot, dividend, divisor)
                     31:      mpz_ptr quot;
                     32:      mpz_srcptr dividend;
                     33:      mpz_srcptr divisor;
                     34: #endif
                     35: {
                     36:   mp_size_t dividend_size = dividend->_mp_size;
                     37:   mp_size_t divisor_size = divisor->_mp_size;
                     38:   mpz_t rem;
                     39:   TMP_DECL (marker);
                     40:
                     41:   TMP_MARK (marker);
                     42:
                     43:   MPZ_TMP_INIT (rem, 1 + ABS (dividend_size));
                     44:
                     45:   mpz_tdiv_qr (quot, rem, dividend, divisor);
                     46:
                     47:   if ((divisor_size ^ dividend_size) < 0 && rem->_mp_size != 0)
                     48:     mpz_sub_ui (quot, quot, 1L);
                     49:
                     50:   TMP_FREE (marker);
                     51: }