| version 1.1, 2000/09/09 14:12:19 |
version 1.1.1.2, 2003/08/25 16:06:07 |
|
|
| /* mpfr_neg -- change the sign of a floating-point number |
/* mpfr_neg -- change the sign of a floating-point number |
| |
|
| Copyright (C) 1999 PolKA project, Inria Lorraine and Loria |
Copyright 1999, 2000, 2001 Free Software Foundation. |
| |
|
| This file is part of the MPFR Library. |
This file is part of the MPFR Library. |
| |
Contributed by the Spaces project (LORIA/LIP6). |
| |
|
| 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. |
| |
|
| 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. |
| |
|
| 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. */ |
| |
|
| #include <stdio.h> |
|
| #include "gmp.h" |
#include "gmp.h" |
| #include "gmp-impl.h" |
|
| #include "mpfr.h" |
#include "mpfr.h" |
| |
#include "mpfr-impl.h" |
| |
|
| void |
int |
| #if __STDC__ |
mpfr_neg (mpfr_ptr a, mpfr_srcptr b, mp_rnd_t rnd_mode) |
| mpfr_neg(mpfr_ptr a, mpfr_srcptr b, unsigned char rnd_mode) |
|
| #else |
|
| mpfr_neg(a, b, rnd_mode) |
|
| mpfr_ptr a; |
|
| mpfr_srcptr b; |
|
| unsigned char rnd_mode; |
|
| #endif |
|
| { |
{ |
| if (a != b) mpfr_set4(a, b, rnd_mode, -SIGN(b)); |
if (a != b) |
| else CHANGE_SIGN(a); |
return mpfr_set4 (a, b, rnd_mode, -MPFR_SIGN(b)); |
| return; |
else |
| |
{ |
| |
MPFR_CHANGE_SIGN(a); |
| |
MPFR_RET(0); |
| |
} |
| } |
} |