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author | Prashanth Mundkur <prashanth.mundkur@gmail.com> | 2020-02-12 09:24:11 -0800 |
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committer | Prashanth Mundkur <prashanth.mundkur@gmail.com> | 2020-02-12 09:24:11 -0800 |
commit | 83df28ae4128babc55157756b63f8684e94e55ca (patch) | |
tree | d8e92236c389bb0c26576a1865ba3997babd5016 /c_emulator/SoftFloat-3e/source/s_negXM.c | |
parent | c34a5ce3e05624eff9daa89770e5d6be627393a4 (diff) | |
parent | ca57c1be19447a5ec831292f0ca4081ffc13b436 (diff) | |
download | sail-riscv-gdb.zip sail-riscv-gdb.tar.gz sail-riscv-gdb.tar.bz2 |
Merge branch 'master' into gdbgdb
Diffstat (limited to 'c_emulator/SoftFloat-3e/source/s_negXM.c')
-rw-r--r-- | c_emulator/SoftFloat-3e/source/s_negXM.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/c_emulator/SoftFloat-3e/source/s_negXM.c b/c_emulator/SoftFloat-3e/source/s_negXM.c new file mode 100644 index 0000000..ec8c928 --- /dev/null +++ b/c_emulator/SoftFloat-3e/source/s_negXM.c @@ -0,0 +1,63 @@ +
+/*============================================================================
+
+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 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 "primitiveTypes.h"
+
+#ifndef softfloat_negXM
+
+void softfloat_negXM( uint_fast8_t size_words, uint32_t *zPtr )
+{
+ unsigned int index, lastIndex;
+ uint_fast8_t carry;
+ uint32_t word;
+
+ index = indexWordLo( size_words );
+ lastIndex = indexWordHi( size_words );
+ carry = 1;
+ for (;;) {
+ word = ~zPtr[index] + carry;
+ zPtr[index] = word;
+ if ( index == lastIndex ) break;
+ index += wordIncr;
+ if ( word ) carry = 0;
+ }
+
+}
+
+#endif
+
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