From 8f59d925353145a65c09301dea6c47da1f1311b1 Mon Sep 17 00:00:00 2001
From: John Hauser <jhauser@eecs.berkeley.edu>
Date: Fri, 28 Nov 2014 19:49:28 -0800
Subject: First draft of RC for Release 3, to start review process.

---
 source/s_shiftLeftM.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 source/s_shiftLeftM.c

(limited to 'source/s_shiftLeftM.c')

diff --git a/source/s_shiftLeftM.c b/source/s_shiftLeftM.c
new file mode 100644
index 0000000..1109bb0
--- /dev/null
+++ b/source/s_shiftLeftM.c
@@ -0,0 +1,86 @@
+
+/*============================================================================
+
+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_shiftLeftM
+
+void
+ softfloat_shiftLeftM(
+     uint_fast8_t size_words,
+     const uint32_t *aPtr,
+     uint32_t count,
+     uint32_t *zPtr
+ )
+{
+    uint32_t wordCount;
+    uint_fast8_t innerCount;
+    uint32_t *destPtr;
+    uint_fast8_t i;
+
+    wordCount = count>>5;
+    if ( wordCount < size_words ) {
+        aPtr += indexMultiwordLoBut( size_words, wordCount );
+        innerCount = count & 31;
+        if ( innerCount ) {
+            softfloat_shortShiftLeftM(
+                size_words - wordCount,
+                aPtr,
+                innerCount,
+                zPtr + indexMultiwordHiBut( size_words, wordCount )
+            );
+            if ( ! wordCount ) return;
+        } else {
+            aPtr += indexWordHi( size_words - wordCount );
+            destPtr = zPtr + indexWordHi( size_words );
+            for ( i = size_words - wordCount; i; --i ) {
+                *destPtr = *aPtr;
+                aPtr -= wordIncr;
+                destPtr -= wordIncr;
+            }
+        }
+        zPtr += indexMultiwordLo( size_words, wordCount );
+    } else {
+        wordCount = size_words;
+    }
+    do {
+        *zPtr++ = 0;
+        --wordCount;
+    } while ( wordCount );
+
+}
+
+#endif
+
-- 
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