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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 <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+
+void
+ softfloat_normRoundPackMToF128M(
+ bool sign, int32_t exp, uint32_t *extSigPtr, uint32_t *zWPtr SOFTFLOAT_STATE_DECL_COMMA )
+{
+ const uint32_t *ptr;
+ int_fast16_t shiftDist;
+ uint32_t wordSig;
+
+ ptr = extSigPtr + indexWordHi( 5 );
+ shiftDist = 0;
+ for (;;) {
+ wordSig = *ptr;
+ if ( wordSig ) break;
+ shiftDist += 32;
+ if ( 160 <= shiftDist ) {
+ zWPtr[indexWordHi( 4 )] = packToF128UI96( sign, 0, 0 );
+ zWPtr[indexWord( 4, 2 )] = 0;
+ zWPtr[indexWord( 4, 1 )] = 0;
+ zWPtr[indexWord( 4, 0 )] = 0;
+ return;
+ }
+ ptr -= wordIncr;
+ }
+ shiftDist += softfloat_countLeadingZeros32( wordSig ) - 15;
+ if ( shiftDist ) {
+ exp -= shiftDist;
+ softfloat_shiftLeft160M( extSigPtr, shiftDist, extSigPtr );
+ }
+ softfloat_roundPackMToF128M( sign, exp, extSigPtr, zWPtr SOFTFLOAT_STATE_ARG_COMMA );
+
+}
+