1 /* mpz_div_ui(quot, dividend, divisor_limb)
2 -- Divide DIVIDEND by DIVISOR_LIMB and store the result in QUOT.
4 Copyright (C) 1991, 1992 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 The GNU MP Library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with the GNU MP Library; see the file COPYING. If not, write to
20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
28 mpz_div_ui (MP_INT *quot, const MP_INT *dividend, unsigned long int divisor_limb)
30 mpz_div_ui (quot, dividend, divisor_limb)
32 const MP_INT *dividend;
33 unsigned long int divisor_limb;
36 mp_size sign_dividend;
37 mp_size dividend_size, quot_size;
38 mp_ptr dividend_ptr, quot_ptr;
40 sign_dividend = dividend->size;
41 dividend_size = ABS (dividend->size);
43 if (dividend_size == 0)
49 /* No need for temporary allocation and copying if QUOT == DIVIDEND as
50 the divisor is just one limb, and thus no intermediate remainders
53 if (quot->alloc < dividend_size)
54 _mpz_realloc (quot, dividend_size);
57 dividend_ptr = dividend->d;
59 mpn_divmod_1 (quot_ptr, dividend_ptr, dividend_size, divisor_limb);
61 /* The quotient is DIVIDEND_SIZE limbs, but the most significant
62 might be zero. Set QUOT_SIZE properly. */
63 quot_size = dividend_size - (quot_ptr[dividend_size - 1] == 0);
64 quot->size = sign_dividend >= 0 ? quot_size : -quot_size;