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/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) 1998-2007 by Systems in Motion. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Systems in Motion about acquiring
* a Coin Professional Edition License.
*
* See http://www.coin3d.org/ for more information.
*
* Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY.
* http://www.sim.no/ sales@sim.no coin-support@coin3d.org
*
\**************************************************************************/
#ifndef COIN_SBBASIC_H
#define COIN_SBBASIC_H
/* *********************************************************************** */
#include <Inventor/C/basic.h>
/* *********************************************************************** */
/* Trap people trying to use Inventor headers while compiling C source code.
* (we get support mail about this from time to time)
*/
#ifndef __cplusplus
#error You are not compiling C++ - maybe your source file is named <file>.c
#endif
/* *********************************************************************** */
/* Include these for Open Inventor compatibility reasons (they are not
* actually used in Coin.)
*/
#define SoEXTENDER
#define SoINTERNAL
/* *********************************************************************** */
/* Some useful inline template functions:
* SbAbs(Val) - returns absolute value
* SbMin(Val1, Val2) - returns minimum value
* SbMax(Val1, Val2) - returns maximum value
* SbClamp(Val, Min, Max) - returns clamped value
* SbSwap(Val1, Val2) - swaps the two values (no return value)
* SbSqr(val) - returns (val)
*/
template <class Type>
inline Type SbAbs( Type Val ) {
return (Val < 0) ? 0 - Val : Val;
}
template <class Type>
inline Type SbMax( const Type A, const Type B ) {
return (A < B) ? B : A;
}
template <class Type>
inline Type SbMin( const Type A, const Type B ) {
return (A < B) ? A : B;
}
template <class Type>
inline Type SbClamp( const Type Val, const Type Min, const Type Max ) {
return (Val < Min) ? Min : (Val > Max) ? Max : Val;
}
template <class Type>
inline void SbSwap( Type & A, Type & B ) {
Type T; T = A; A = B; B = T;
}
template <class Type>
inline Type SbSqr(const Type val) {
return val * val;
}
/* *********************************************************************** */
template <typename Type>
inline void SbDividerChk(const char * funcname, Type divider) {
#ifndef NDEBUG
if (!(divider != static_cast<Type>(0)))
cc_debugerror_post(funcname, "divide by zero error.", divider);
#endif // !NDEBUG
}
/* *********************************************************************** */
/* COMPILER BUG WORKAROUND:
We've had reports that Sun CC v4.0 is (likely) buggy, and doesn't
allow a statement like
SoType SoNode::classTypeId = SoType::badType();
As a hack we can however get around this by instead writing it as
SoType SoNode::classTypeId;
..as the SoType variable will then be initialized to bitpattern
0x0000, which equals SoType::badType(). We can *however* not do
this for the Intel C/C++ compiler, as that does *not* init to the
0x0000 bitpattern (which may be a separate bug -- I haven't read
the C++ spec closely enough to decide whether that relied on
unspecified behavior or not).
The latest version of the Intel compiler has been tested to still
have this problem, so I've decided to re-install the old code, but
in this form:
SoType SoNode::classTypeId STATIC_SOTYPE_INIT;
..so it is easy to revert if somebody complains that the code
reversal breaks their old Sun CC 4.0 compiler -- see the #define of
STATIC_SOTYPE_INIT below.
If that happens, we should work with the reporter, having access to
the buggy compiler, to make a configure check which sets the
SUN_CC_4_0_SOTYPE_INIT_BUG #define in include/Inventor/C/basic.h.in.
(Note that the Sun CC compiler has moved on, and a later version
we've tested, 5.4, does not have the bug.)
20050105 mortene.
*/
#define SUN_CC_4_0_SOTYPE_INIT_BUG 0 /* assume compiler is ok for now */
#if SUN_CC_4_0_SOTYPE_INIT_BUG
#define STATIC_SOTYPE_INIT
#else
#define STATIC_SOTYPE_INIT = SoType::badType()
#endif
/* *********************************************************************** */
#endif /* !COIN_SBBASIC_H */
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