6ec01646dc
BMakefiles and other bits will follow. Requested by: Andrey Chernov Made world by: Chuck Robey
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/* mpz_set_f (dest_integer, src_float) -- Assign DEST_INTEGER from SRC_FLOAT.
|
|
|
|
Copyright (C) 1996 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 Library General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, 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 Library General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
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,
|
|
MA 02111-1307, USA. */
|
|
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
|
|
void
|
|
#if __STDC__
|
|
mpz_set_f (mpz_ptr w, mpf_srcptr u)
|
|
#else
|
|
mpz_set_f (w, u)
|
|
mpz_ptr w;
|
|
mpf_srcptr u;
|
|
#endif
|
|
{
|
|
mp_ptr wp, up;
|
|
mp_size_t usize, size;
|
|
mp_exp_t exp;
|
|
|
|
usize = SIZ (u);
|
|
size = ABS (usize);
|
|
exp = EXP (u);
|
|
|
|
if (w->_mp_alloc < exp)
|
|
_mpz_realloc (w, exp);
|
|
|
|
wp = w->_mp_d;
|
|
up = u->_mp_d;
|
|
|
|
if (exp <= 0)
|
|
{
|
|
SIZ (w) = 0;
|
|
return;
|
|
}
|
|
if (exp < size)
|
|
{
|
|
MPN_COPY (wp, up + size - exp, exp);
|
|
}
|
|
else
|
|
{
|
|
MPN_ZERO (wp, exp - size);
|
|
MPN_COPY (wp + exp - size, up, size);
|
|
}
|
|
|
|
w->_mp_size = usize >= 0 ? exp : -exp;
|
|
}
|