/usr/include/gmt/gmt_nan.h is in libgmt-dev 5.2.1+dfsg-3build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | /*--------------------------------------------------------------------
* $Id: gmt_nan.h 15178 2015-11-06 10:45:03Z fwobbe $
*
* Copyright (c) 1991-2015 by P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis and F. Wobbe
* See LICENSE.TXT file for copying and redistribution conditions.
*
* 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; version 3 or 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.
*
* Contact info: gmt.soest.hawaii.edu
*--------------------------------------------------------------------*/
/*
* Machine-dependent macros for generation and testing of NaNs.
*
* These routines use the IEEE definition of Silent NaNs to set NaNs and
* use the avialable isnan* routines to test NaNs whenever available.
*
* Notes:
* If your system has no IEEE support, add -DNO_IEEE to CFLAGS
* We will then use the max double/float values to signify NaNs.
*
* Author: Remko Scharroo
* Date: 1-JAN-2010
* Ver: 5 API
*/
/*!
* \file gmt_nan.h
* \brief Machine-dependent macros for generation and testing of NaNs
*/
#ifndef _GMT_NAN_H
#define _GMT_NAN_H
#include "gmt_notposix.h"
#ifdef NO_IEEE
# define GMT_make_fnan(x) (x = FLT_MAX)
# define GMT_make_dnan(x) (x = DBL_MAX)
# define GMT_is_fnan(x) ((x) == FLT_MAX)
# define GMT_is_dnan(x) ((x) == DBL_MAX)
#else
# define GMT_make_fnan(x) (x = (float) NAN)
# define GMT_make_dnan(x) (x = NAN)
# define GMT_is_fnan isnan
# define GMT_is_dnan isnan
#endif
#endif /* _GMT_NAN_H */
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