version 1.1.1.1, 2000/09/09 14:12:19 |
version 1.1.1.2, 2003/08/25 16:06:06 |
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/* mpfr_div_2exp -- divide a floating-point number by a power of two |
/* mpfr_div_2exp -- divide a floating-point number by a power of two |
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Copyright (C) 1999 PolKA project, Inria Lorraine and Loria |
Copyright 1999, 2001 Free Software Foundation, Inc. |
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This file is part of the MPFR Library. |
This file is part of the MPFR Library. |
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The MPFR Library is free software; you can redistribute it and/or modify |
The MPFR 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 MPFR Library is distributed in the hope that it will be useful, but |
The MPFR 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 MPFR Library; see the file COPYING.LIB. If not, write to |
along with the MPFR 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. */ |
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#include <stdio.h> |
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#include "gmp.h" |
#include "gmp.h" |
#include "gmp-impl.h" |
#include "gmp-impl.h" |
#include "mpfr.h" |
#include "mpfr.h" |
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#include "mpfr-impl.h" |
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void |
/* Obsolete function, use mpfr_div_2ui or mpfr_div_2si instead. */ |
#if __STDC__ |
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mpfr_div_2exp(mpfr_ptr y, mpfr_srcptr x, unsigned long int n, unsigned char rnd_mode) |
#undef mpfr_div_2exp |
#else |
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mpfr_div_2exp(y, x, n, rnd_mode) |
int |
mpfr_ptr y; |
mpfr_div_2exp (mpfr_ptr y, mpfr_srcptr x, unsigned long int n, mp_rnd_t rnd_mode) |
mpfr_srcptr x; |
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unsigned long int n; |
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unsigned char rnd_mode; |
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#endif |
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{ |
{ |
/* Important particular case */ |
return mpfr_div_2ui (y, x, n, rnd_mode); |
if (y != x) mpfr_set(y, x, rnd_mode); |
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EXP(y) -= n; |
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return; |
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} |
} |
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