EVOLUTION-MANAGER

Edit File: Arith.h

/* * R : A Computer Language for Statistical Data Analysis * Copyright (C) 1995, 1996 Robert Gentleman and Ross Ihaka * Copyright (C) 1998--2016 The R Core Team. * * This header file 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 file is part of R. R is distributed under the terms of the * GNU General Public License, either Version 2, June 1991 or Version 3, * June 2007. See doc/COPYRIGHTS for details of the copyright status of R. * * 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, a copy is available at * https://www.R-project.org/Licenses/ */ /* Included by R.h: API */ #ifndef R_ARITH_H_ #define R_ARITH_H_ /* This used to define _BSD_SOURCE to make declarations of isfinite and isnan visible in glibc. But that was deprecated in glibc 2.20, and --std=c99 suffices nowadays. */ #include <R_ext/libextern.h> #ifdef __cplusplus extern "C" { #else /* needed for isnan and isfinite, neither of which are used under C++ */ # include <math.h> #endif /* implementation of these : ../../main/arithmetic.c */ LibExtern double R_NaN; /* IEEE NaN */ LibExtern double R_PosInf; /* IEEE Inf */ LibExtern double R_NegInf; /* IEEE -Inf */ LibExtern double R_NaReal; /* NA_REAL: IEEE */ 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 unused */ #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_finite(double); /* True if none of NA, NaN, +/-Inf */ #define ISNA(x) R_IsNA(x) /* ISNAN(): True for *both* NA and NaN. NOTE: some systems do not return 1 for TRUE. Also note that C++ math headers specifically undefine isnan if it is a macro (it is on macOS and in C99), hence the workaround. This code also appears in Rmath.h */ #ifdef __cplusplus int R_isnancpp(double); /* in arithmetic.c */ # define ISNAN(x) R_isnancpp(x) #else # define ISNAN(x) (isnan(x)!=0) #endif /* The following is only defined inside R */ #ifdef HAVE_WORKING_ISFINITE /* isfinite is defined in <math.h> according to C99 */ # define R_FINITE(x) isfinite(x) #else # define R_FINITE(x) R_finite(x) #endif #ifdef __cplusplus } #endif #endif /* R_ARITH_H_ */