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/**
* @file thinfnan.h
* Therion number constants.
*/
/* Copyright (C) 2000 Stacho Mudrak
*
* $Date: $
* $RCSfile: $
* $Revision: $
*
* --------------------------------------------------------------------
* This program 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 of the License, 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 thinfnan_h
#define thinfnan_h
#include <math.h>
// nan handling
#ifdef NAN
#ifdef THLINUX
#define thnan NAN
#define thisnan isnan
#else
#define thnan -9e99
#define thisnan(number) (number == thnan)
#endif
#else
#define thnan -9e99
#define thisnan(number) (number == thnan)
#endif
// infinity handling
#ifdef INFINITY
#ifdef THLINUX
#define thinf INFINITY
#define thisinf isinf
#else
#define thinf 1e100
#define thisinf(number) (number >= thinf ? 1 : (number <= -thinf ? -1 : 0))
#endif
#else
#define thinf 1e100
#define thisinf(number) (number >= thinf ? 1 : (number <= -thinf ? -1 : 0))
#endif
/**
* Update double variable if nan.
*
* @param oval Original value
* @param uval Update value
*/
void thnan_update(double & oval, double uval);
/**
* A inf nan printing macro.
*
* -Inf -> -999.999
* Inf -> 999.999
* NaN -> 1000.0001
*/
#define thinn(cislo) (thisnan(cislo) ? 1000.0001 : \
(thisinf(cislo) == 1 ? 999.999 : \
(thisinf(cislo) == -1 ? -999.999 : cislo)))
// infnan.h
#endif
/**
* Print number in nan format.
*/
#define thprintinfnan(cislo) {\
if (thisnan(cislo)) \
thprintf("thnan"); \
else if (thisinf(cislo) == 1) \
thprintf("thinf"); \
else if (thisinf(cislo) == -1) \
thprintf("-thinf"); \
else \
thprintf("%lg",cislo);}
#define THPI 3.1415926535898
#define thnanpow2(cislo) ((thisnan(cislo) ? 0.0 : cislo) * (thisnan(cislo) ? 0.0 : cislo))
#define thdxyz2length(dx,dy,dz) (sqrt(thnanpow2(dx) + thnanpow2(dy) + thnanpow2(dz)))
#define thdxyz2b(dx,dy,dz) (270 - (atan2(dy,dx) / THPI * 180.0 + 180))
#define thdxyz2bearing(dx,dy,dz) (thdxyz2b(dx,dy,dz) < 0.0 ? thdxyz2b(dx,dy,dz) + 360.0 : thdxyz2b(dx,dy,dz))
#define thdxyz2clino(dx,dy,dz) (atan2(dz,sqrt(thnanpow2(dx) + thnanpow2(dy))) / THPI * 180.0)
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