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fp_usingSEH() {
  /* ... */
  double a = 1e-40, b, c = 0.1;
  float x = 0, y;
  unsigned int rv ;

  unmask_fp();

  _try {
	// Store into y is inexact and underflows:
	y = a;

	// divide by zero operation
	b = y / x;

	// inexact
	c = sin(30) * a;
  }

  _except (_fpieee_flt (GetExceptionCode(), GetExceptionInformation(), fpieee_handler)) {
	printf ("fpieee_handler: EXCEPTION_EXECUTE_HANDLER");
  }

   ...
}

void unmask_fpsr(void)
{
      	unsigned int u;
      	unsigned int control_word;
	_controlfp_s(&control_word, 0, 0);
	u = control_word & ~(_EM_INVALID \| _EM_DENORMAL \| _EM_ZERODIVIDE | _EM_OVERFLOW | _EM_UNDERFLOW | _EM_INEXACT);
	_controlfp_s( &control_word, u, _MCW_EM);
	return ;
}

int fpieee_handler (_FPIEEE_RECORD *ieee)
{
	// ...

	switch(ieee->RoundingMode) {
		case _FpRoundNearest:
			// ....
		break;

		\/* Other RMs include _FpRoundMinusInfinity, _FpRoundPlusInfinity, _FpRoundChopped */
			// ....
	}

	switch(ieee->Precision) {
		case _FpPrecision24:
		// ....
		break;

		/* Other Ps include _FpPrecision53*/
		// ....
	}

	switch(ieee->Operation) {
		case _FpCodeAdd:
     		 // ...
      		break;

      /\		/* Other Ops include \_FpCodeSubtract, \_FpCodeMultiply, \_FpCodeDivide, \_FpCodeSquareRoot, \_FpCodeCompare, \_FpCodeConvert, \_FpCodeConvertTrunc \*/
      		// ....

   	}

   	// process the bitmap ieee->Cause
   	// process the bitmap ieee->Enable
   	// process the bitmap ieee->Status
   	// process the Operand ieee->Operand1, evaluate format and Value
   	// process the Operand ieee->Operand2, evaluate format and Value
   	// process the Result ieee->Result, evaluate format and Value
   	// the result should be set according to the operation specified in ieee->Cause and the result format as specified in ieee->Result
   	// the Result set is based on the
  	// ...
}