/* * 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_ARITH_H_ #define R_ARITH_H_ #ifdef Macintosh #include <fp.h> #else #include <math.h> #endif #include <R_ext/libextern.h> #ifdef __cplusplus extern "C" { #endif /* implementation of these : ../../main/arithmetic.c */ LibExtern double R_NaN; /* IEEE NaN or = NA_REAL */ LibExtern double R_PosInf; /* IEEE Inf or DBL_MAX */ LibExtern double R_NegInf; /* IEEE -Inf or -DBL_MAX */ LibExtern double R_NaReal; /* NA_REAL: IEEE or "almost -DBL_MAX" */ LibExtern int R_NaInt; /* NA_INTEGER:= INT_MIN currently */ #ifdef __MAIN__ #undef extern #undef LibExtern #endif #define NA_LOGICAL R_NaInt #define NA_INTEGER R_NaInt #define NA_FACTOR R_NaInt #define NA_REAL R_NaReal /* NA_STRING is a SEXP, so defined in Rinternals.h */ int R_IsNA(double); /* True for R's NA only */ int R_IsNaN(double); /* True for special NaN, *not* for NA */ int R_IsNaNorNA(double); /* True for both */ int R_finite(double); /* True if none of NA, NaN, +/-Inf */ #define ISNA(x) R_IsNA(x) #define ISNAN(x) R_IsNaNorNA(x) #define R_FINITE(x) R_finite(x) #ifdef __cplusplus } #endif #endif /* R_ARITH_H_ */