1 /* mpf_div_ui -- Divide a float with an unsigned integer.
3 Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Library General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
15 License for more details.
17 You should have received a copy of the GNU Library General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 MA 02111-1307, USA. */
28 mpf_div_ui (mpf_ptr r, mpf_srcptr u, unsigned long int v)
39 mp_size_t rsize, tsize;
40 mp_size_t sign_quotient;
47 sign_quotient = usize;
52 v = 1 / v; /* divide by zero as directed */
66 tp = (mp_ptr) TMP_ALLOC ((tsize + 1) * BYTES_PER_MP_LIMB);
76 MPN_ZERO (tp, tsize - usize);
77 rtp = tp + (tsize - usize);
80 /* Move the dividend to the remainder. */
81 MPN_COPY (rtp, up, usize);
83 mpn_divmod_1 (rp, tp, tsize, (mp_limb_t) v);
84 q_limb = rp[tsize - 1];
86 rsize = tsize - (q_limb == 0);
87 rexp = u->_mp_exp - (q_limb == 0);
88 r->_mp_size = sign_quotient >= 0 ? rsize : -rsize;