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diff --git a/softfloat/i64_to_f128M.c b/softfloat/i64_to_f128M.c
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+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3e, 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 "internals.h"
+#include "softfloat.h"
+
+#ifdef SOFTFLOAT_FAST_INT64
+
+void i64_to_f128M( int64_t a, float128_t *zPtr )
+{
+
+    *zPtr = i64_to_f128( a );
+
+}
+
+#else
+
+void i64_to_f128M( int64_t a, float128_t *zPtr )
+{
+    uint32_t *zWPtr;
+    uint32_t uiZ96, uiZ64;
+    bool sign;
+    uint64_t absA;
+    uint_fast8_t shiftDist;
+    uint32_t *ptr;
+
+    zWPtr = (uint32_t *) zPtr;
+    uiZ96 = 0;
+    uiZ64 = 0;
+    zWPtr[indexWord( 4, 1 )] = 0;
+    zWPtr[indexWord( 4, 0 )] = 0;
+    if ( a ) {
+        sign = (a < 0);
+        absA = sign ? -(uint64_t) a : (uint64_t) a;
+        shiftDist = softfloat_countLeadingZeros64( absA ) + 17;
+        if ( shiftDist < 32 ) {
+            ptr = zWPtr + indexMultiwordHi( 4, 3 );
+            ptr[indexWord( 3, 2 )] = 0;
+            ptr[indexWord( 3, 1 )] = absA>>32;
+            ptr[indexWord( 3, 0 )] = absA;
+            softfloat_shortShiftLeft96M( ptr, shiftDist, ptr );
+            ptr[indexWordHi( 3 )] =
+                packToF128UI96(
+                    sign, 0x404E - shiftDist, ptr[indexWordHi( 3 )] );
+            return;
+        }
+        absA <<= shiftDist - 32;
+        uiZ96 = packToF128UI96( sign, 0x404E - shiftDist, absA>>32 );
+        uiZ64 = absA;
+    }
+    zWPtr[indexWord( 4, 3 )] = uiZ96;
+    zWPtr[indexWord( 4, 2 )] = uiZ64;
+
+}
+
+#endif
+