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/* mpfr_sgn -- Sign of a floating point number.
Copyright 2003, 2004 Free Software Foundation.
Contributed by the Spaces project, INRIA Lorraine.
This file is part of the MPFR Library.
The MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The MPFR 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 Lesser General Public
License for more details.
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
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "mpfr-impl.h"
int
mpfr_sgn (mpfr_srcptr a)
{
if (MPFR_UNLIKELY( MPFR_IS_SINGULAR(a) ))
{
/* Only infinite is signed */
if (MPFR_IS_INF(a))
return MPFR_INT_SIGN(a);
else
return 0;
}
return MPFR_INT_SIGN(a);
}
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