version 1.1.1.1, 2000/01/10 15:35:27 |
version 1.1.1.2, 2000/09/09 14:12:50 |
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/* mpz_fdiv_q_2exp -- Divide an integer by 2**CNT. Round the quotient |
/* mpz_fdiv_q_2exp -- Divide an integer by 2**CNT. Round the quotient |
towards -infinity. |
towards -infinity. |
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Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc. |
Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999 Free Software Foundation, |
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Inc. |
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This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
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The GNU MP Library is free software; you can redistribute it and/or modify |
The GNU MP Library is free software; you can redistribute it and/or modify |
it under the terms of the GNU Library General Public License as published by |
it under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
option) any later version. |
option) any later version. |
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The GNU MP Library is distributed in the hope that it will be useful, but |
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 |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
License for more details. |
License for more details. |
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You should have received a copy of the GNU Library General Public License |
You should have received a copy of the GNU Lesser General Public License |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
Line 86 mpz_fdiv_q_2exp (w, u, cnt) |
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Line 87 mpz_fdiv_q_2exp (w, u, cnt) |
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if (usize < 0 && round != 0) |
if (usize < 0 && round != 0) |
{ |
{ |
mp_limb_t cy; |
mp_limb_t cy; |
cy = mpn_add_1 (wp, wp, wsize, 1); |
if (wsize != 0) |
wp[wsize] = cy; |
{ |
wsize += cy; |
cy = mpn_add_1 (wp, wp, wsize, (mp_limb_t) 1); |
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wp[wsize] = cy; |
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wsize += cy; |
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} |
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else |
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{ |
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/* We shifted something negative to zero. The result is -1. */ |
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wp[0] = 1; |
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wsize = 1; |
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} |
} |
} |
w->_mp_size = usize >= 0 ? wsize : -wsize; |
w->_mp_size = usize >= 0 ? wsize : -wsize; |
} |
} |