101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* CTOOLS for Harbour, Math header file
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*
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* Copyright 2001 Alejandro de garate <alex_degarate@hotmail.com>
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*
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#ifndef _CTMATH_H
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#define _CTMATH_H
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#include <math.h>
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#include <float.h>
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#include <limits.h>
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/* initialization */
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extern int ct_math_init (void);
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extern int ct_math_exit (void);
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/* set & get math error correction status */
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extern void ct_setmatherrstatus (int iStatus);
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extern int ct_getmatherrstatus (void);
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/* set & get math error correction mode */
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extern void ct_setmatherrmode (int iMode);
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extern int ct_getmatherrmode (void);
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/* functions to bracket CT3 math code */
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void ct_matherrbegin (void);
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void ct_matherrend (void);
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/* stati and modes for math error correction */
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#define CT_MATHERR_STATUS_NOTFOUND HB_MATH_HANDLER_STATUS_NOTFOUND /* math handler is not installed */
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#define CT_MATHERR_STATUS_INACTIVE HB_MATH_HANDLER_STATUS_INACTIVE /* math handler is installed but inactive */
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#define CT_MATHERR_STATUS_ACTIVE HB_MATH_HANDLER_STATUS_ACTIVE /* math handler is installed and active */
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#define CT_MATHERR_MODE_NONE 0 /* no correction at all, program will exit */
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#define CT_MATHERR_MODE_DEFAULT 1 /* default return value will be used, no error msgs ! */
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#define CT_MATHERR_MODE_USER 2 /* error will be thrown to user who is responsible for error correction */
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#define CT_MATHERR_MODE_USERDEFAULT 3 /* error will be thrown, but if user fails, default correction will be used */
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/* CT3 math error handler */
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extern int ct_matherr (HB_MATH_EXCEPTION * pexc);
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/* set & get precision */
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extern void ct_setprecision (int iPrecision);
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extern int ct_getprecision();
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#define CT_PI 3.14159265358979323846
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#define CT_PI_2 1.57079632679489661923
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#define CT_PI_RAD 0.0174532925199432957692 /* 3.14159265358979323846 / 180.0 */
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#endif /* CTMATH_H */
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