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- /* mpz_div_ui(quot, dividend, divisor_limb)
- -- Divide DIVIDEND by DIVISOR_LIMB and store the result in QUOT.
-
- Copyright (C) 1991, 1992 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 General Public License as published by
- the Free Software Foundation; either version 2, 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with the GNU MP Library; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "longlong.h"
-
- void
- #ifdef __STDC__
- mpz_div_ui (MP_INT *quot, const MP_INT *dividend, unsigned long int divisor_limb)
- #else
- mpz_div_ui (quot, dividend, divisor_limb)
- MP_INT *quot;
- const MP_INT *dividend;
- unsigned long int divisor_limb;
- #endif
- {
- mp_size sign_dividend;
- mp_size dividend_size, quot_size;
- mp_ptr dividend_ptr, quot_ptr;
-
- sign_dividend = dividend->size;
- dividend_size = ABS (dividend->size);
-
- if (dividend_size == 0)
- {
- quot->size = 0;
- return;
- }
-
- /* No need for temporary allocation and copying if QUOT == DIVIDEND as
- the divisor is just one limb, and thus no intermediate remainders
- need to be stored. */
-
- if (quot->alloc < dividend_size)
- _mpz_realloc (quot, dividend_size);
-
- quot_ptr = quot->d;
- dividend_ptr = dividend->d;
-
- mpn_divmod_1 (quot_ptr, dividend_ptr, dividend_size, divisor_limb);
-
- /* The quotient is DIVIDEND_SIZE limbs, but the most significant
- might be zero. Set QUOT_SIZE properly. */
- quot_size = dividend_size - (quot_ptr[dividend_size - 1] == 0);
- quot->size = sign_dividend >= 0 ? quot_size : -quot_size;
- }
-