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Constants.h
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Constants.h
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/*
* R : A Computer Language for Statistical Data Analysis
* Copyright (C) 1995, 1996 Robert Gentleman and Ross Ihaka
* Copyright (C) 1998-2001 The R Development Core Team.
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef R_EXT_CONSTANTS_H_
#define R_EXT_CONSTANTS_H_
#ifndef M_PI
#define M_PI 3.141592653589793238462643383279502884197169399375
#endif
#define PI M_PI
#define SINGLE_EPS FLT_EPSILON
#define SINGLE_BASE FLT_RADIX
#define SINGLE_XMIN FLT_MIN
#define SINGLE_XMAX FLT_MAX
#define DOUBLE_DIGITS DBL_MANT_DIG
#define DOUBLE_EPS DBL_EPSILON
#define DOUBLE_XMAX DBL_MAX
#define DOUBLE_XMIN DBL_MIN
#endif