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diff --git a/source/s_remStepMBy32.c b/source/s_remStepMBy32.c
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+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014 The Regents of the University of California
+(Regents).  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 two paragraphs of disclaimer.
+Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions, and the following two paragraphs of disclaimer in the
+documentation and/or other materials provided with the distribution.  Neither
+the name of the Regents nor the names of its contributors may be used to
+endorse or promote products derived from this software without specific prior
+written permission.
+
+IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
+OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
+BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
+HEREUNDER IS PROVIDED "AS IS".  REGENTS HAS NO OBLIGATION TO PROVIDE
+MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+=============================================================================*/
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+#ifndef softfloat_remStepMBy32
+
+void
+ softfloat_remStepMBy32(
+     uint_fast8_t size_words,
+     const uint32_t *remPtr,
+     uint_fast8_t count,
+     const uint32_t *bPtr,
+     uint32_t q,
+     uint32_t *zPtr
+ )
+{
+    uint_fast8_t negCount;
+    unsigned int index, lastIndex;
+    uint64_t dwordProd;
+    uint32_t wordRem, wordShiftedRem, wordProd;
+    uint_fast8_t borrow;
+
+    negCount = -count;
+    index = indexWordLo( size_words );
+    lastIndex = indexWordHi( size_words );
+    dwordProd = (uint64_t) bPtr[index] * q;
+    wordRem = remPtr[index];
+    wordShiftedRem = wordRem<<count;
+    wordProd = dwordProd;
+    zPtr[index] = wordShiftedRem - wordProd;
+    if ( index != lastIndex ) {
+        borrow = (wordShiftedRem < wordProd);
+        for (;;) {
+            wordShiftedRem = wordRem>>(negCount & 31);
+            index += wordIncr;
+            dwordProd = (uint64_t) bPtr[index] * q + (dwordProd>>32);
+            wordRem = remPtr[index];
+            wordShiftedRem |= wordRem<<count;
+            wordProd = dwordProd;
+            zPtr[index] = wordShiftedRem - wordProd - borrow;
+            if ( index == lastIndex ) break;
+            borrow =
+                borrow ? (wordShiftedRem <= wordProd)
+                    : (wordShiftedRem < wordProd);
+        }
+    }
+
+}
+
+#endif
+