Mercurial > hg > octave-lyh
diff liboctave/lo-utils.cc @ 1967:4cb6aaa0f2c7
[project @ 1996-02-17 02:54:24 by jwe]
Initial revision
author | jwe |
---|---|
date | Sat, 17 Feb 1996 02:54:24 +0000 |
parents | |
children | 1b57120c997b |
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new file mode 100644 --- /dev/null +++ b/liboctave/lo-utils.cc @@ -0,0 +1,61 @@ +// utils.cc -*- C++ -*- +/* + +Copyright (C) 1996 John W. Eaton + +This file is part of Octave. + +Octave is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +Octave 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 General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Octave; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <climits> + +#include "lo-mappers.h" +#include "lo-utils.h" + +// Convert X to the nearest integer value. Should not pass NaN to +// this function. + +int +NINT (double x) +{ + if (x > INT_MAX) + return INT_MAX; + else if (x < INT_MIN) + return INT_MIN; + else + return (x > 0) ? ((int) (x + 0.5)) : ((int) (x - 0.5)); +} + +double +D_NINT (double x) +{ + if (xisinf (x) || xisnan (x)) + return x; + else + return floor (x + 0.5); +} + +/* +;;; Local Variables: *** +;;; mode: C++ *** +;;; page-delimiter: "^/\\*" *** +;;; End: *** +*/