Upgrade to SoftFloat 3e

1 files changed, 91 insertions, 0 deletions

diff --git a/softfloat/s_shiftLeftM.c b/softfloat/s_shiftLeftM.c
new file mode 100644
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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"
+
+#ifndef softfloat_shiftLeftM
+
+#define softfloat_shiftLeftM softfloat_shiftLeftM
+#include "primitives.h"
+
+void
+ softfloat_shiftLeftM(
+     uint_fast8_t size_words,
+     const uint32_t *aPtr,
+     uint32_t dist,
+     uint32_t *zPtr
+ )
+{
+    uint32_t wordDist;
+    uint_fast8_t innerDist;
+    uint32_t *destPtr;
+    uint_fast8_t i;
+
+    wordDist = dist>>5;
+    if ( wordDist < size_words ) {
+        aPtr += indexMultiwordLoBut( size_words, wordDist );
+        innerDist = dist & 31;
+        if ( innerDist ) {
+            softfloat_shortShiftLeftM(
+                size_words - wordDist,
+                aPtr,
+                innerDist,
+                zPtr + indexMultiwordHiBut( size_words, wordDist )
+            );
+            if ( ! wordDist ) return;
+        } else {
+            aPtr += indexWordHi( size_words - wordDist );
+            destPtr = zPtr + indexWordHi( size_words );
+            for ( i = size_words - wordDist; i; --i ) {
+                *destPtr = *aPtr;
+                aPtr -= wordIncr;
+                destPtr -= wordIncr;
+            }
+        }
+        zPtr += indexMultiwordLo( size_words, wordDist );
+    } else {
+        wordDist = size_words;
+    }
+    do {
+        *zPtr++ = 0;
+        --wordDist;
+    } while ( wordDist );
+
+}
+
+#endif
+