text: /*
   * Copyright (C) 2016-2017 Andes Technology, Inc.
   * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   */
  
  /* Raise given exceptions.
     Copyright (C) 2004-2013 Free Software Foundation, Inc.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library.  If not, see
     <http://www.gnu.org/licenses/>.  */
  
  #include <fpu_control.h>
  #include <fenv.h>
  #include <float.h>
  #include "fenv_libc.h"
  
  int
  feraiseexcept (int excepts)
  {
  #ifdef __NDS32_ABI_2FP_PLUS__
  	float temp1 = 0.0, temp2 = 1.0;
  	if (FE_INVALID & excepts)
  	{
  		__asm__ volatile(
  			"fmtsr\t %0, $fs0\n\t"
  			"fdivs\t $fs0, $fs0, $fs0\n\t"
  			:
  			:"r"(temp1)
  			:"$fs0"
  			);
  	}
  	if (FE_DIVBYZERO & excepts)
  	{
  		__asm__ volatile(
  			"fmtsr\t %0, $fs0\n\t"
  			"fmtsr\t %1, $fs1\n\t"
  			"fdivs\t $fs0, $fs1, $fs0\n\t"
  			:
  			:"r"(temp1),"r"(temp2)
  			:"$fs0"
  			);
  	}
  	if (FE_OVERFLOW & excepts)
  	{
  	/* There's no way to raise overflow without also raising inexact.
  	*/
  		unsigned int fpcsr;
  		temp1 = FLT_MAX;
  		__asm__ volatile(
  			"fmfcsr\t %0\n\t"
  			"fmtsr\t %1, $fs0\n\t"
  			"fadds\t $fs0, $fs0, $fs0\n\t"
  			"ori\t %0,%0,0x10\n\t"
  			"fmtcsr\t %0\n\t"
  			:"=&r"(fpcsr)
  			:"r"(temp1)
  			:"$fs0"
  			);
  	}
  	if (FE_UNDERFLOW & excepts)
  	{
  	/* There's no way to raise overflow without also raising inexact.
  	*/
  		temp1 = FLT_MIN;
  		temp2 = 2.0;
  		__asm__ volatile(
  			"fmtsr\t %0, $fs0\n\t"
  			"fmtsr\t %1, $fs1\n\t"
  			"fdivs\t $fs1, $fs0, $fs1\n\t"
  			:
  			:"r"(temp1),"r"(temp2)
  			:"$fs0","$fs1"
  			);
  	}
  	if (FE_INEXACT & excepts)
  	{
  		temp1 = 3.0;
  		__asm__ volatile(
  			"fmtsr\t %0, $fs1\n\t"
  			"fmtsr\t %1, $fs0\n\t"
  			"fdivs\t $fs1, $fs0, $fs1\n\t"
  			:
  			:"r"(temp1),"r"(temp2)
  			:"$fs0","$fs1"
  			);
  	}
  
  	return 0;
  
  #endif
  	/* Unsupported, so fail unless nothing needs to be done.  */
  	return (excepts != 0);
  }
  