text: 
  /*============================================================================
  
  This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
  Package, Release 3c, by John R. Hauser.
  
  Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of
  California.  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  
   1. Redistributions of source code must retain the above copyright notice,
      this list of conditions, and the following disclaimer.
  
   2. 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.
  
   3. Neither the name of the University 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 REGENTS 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 REGENTS 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.
  
  =============================================================================*/
  
  #include <stdint.h>
  #include "platform.h"
  #include "primitiveTypes.h"
  
  #ifndef softfloat_addM
  
  void
   softfloat_addM(
       uint_fast8_t size_words,
       const uint32_t *aPtr,
       const uint32_t *bPtr,
       uint32_t *zPtr
   )
  {
      unsigned int index, lastIndex;
      uint_fast8_t carry;
      uint32_t wordA, wordZ;
  
      index = indexWordLo( size_words );
      lastIndex = indexWordHi( size_words );
      carry = 0;
      for (;;) {
          wordA = aPtr[index];
          wordZ = wordA + bPtr[index] + carry;
          zPtr[index] = wordZ;
          if ( index == lastIndex ) break;
          if ( wordZ != wordA ) carry = (wordZ < wordA);
          index += wordIncr;
      }
  
  }
  
  #endif
  
  