///////////////////////////////////////////////////////////////////////////

//

// Copyright (c) 1997-2012, Industrial Light & Magic, a division of Lucas

// Digital Ltd. LLC

//

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// *       Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// *       Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// *       Neither the name of Industrial Light & Magic nor the names of

// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

///////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------

//

//	A function to control which IEEE floating

//	point exceptions will be translated into

//	C++ MathExc exceptions.

//

//-----------------------------------------------------

#include <IexMathFloatExc.h>

#include <IexMacros.h>

#include <IexMathFpu.h>

#if 0

    #include <iostream>

    #define debug(x) (std::cout << x << std::flush)

#else

    #define debug(x)

#endif

IEX_INTERNAL_NAMESPACE_SOURCE_ENTER

namespace {

void

fpeHandler (int type, const char explanation[])

{

    switch (type)

    {

      case IEEE_OVERFLOW:

	throw OverflowExc (explanation);

      case IEEE_UNDERFLOW:

	throw UnderflowExc (explanation);

      case IEEE_DIVZERO:

	throw DivzeroExc (explanation);

      case IEEE_INEXACT:

	throw InexactExc (explanation);

      case IEEE_INVALID:

	throw InvalidFpOpExc (explanation);

    }

    throw MathExc (explanation);

}

} // namespace

void

mathExcOn (int when)

{

    debug ("mathExcOn (when = 0x" << std::hex << when << ")\n");

    setFpExceptions (when);

    setFpExceptionHandler (fpeHandler);

}

int

getMathExcOn ()

{

    int when = fpExceptions();

    debug ("getMathExcOn () == 0x" << std::hex << when << ")\n");

    return when;

}

void

MathExcOn::handleOutstandingExceptions()

{

    handleExceptionsSetInRegisters();

}

IEX_INTERNAL_NAMESPACE_SOURCE_EXIT