fixed adding file problem

[c11concurrency-benchmarks.git] / gdax-orderbook-hpp / demo / dependencies / libcds-2.3.2 / cds / compiler / gcc / sparc / bitop.h

diff --git a/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/compiler/gcc/sparc/bitop.h b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/compiler/gcc/sparc/bitop.h
new file mode 100644 (file)
index 0000000..f2b9a97
--- /dev/null
+++ b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/compiler/gcc/sparc/bitop.h
@@ -0,0 +1,70 @@
+/*
+    This file is a part of libcds - Concurrent Data Structures library
+
+    (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+    Source code repo: http://github.com/khizmax/libcds/
+    Download: http://sourceforge.net/projects/libcds/files/
+
+    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 disclaimer.
+
+    * 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.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+*/
+
+#ifndef CDSLIB_COMPILER_GCC_SPARC_BITOP_H
+#define CDSLIB_COMPILER_GCC_SPARC_BITOP_H
+
+//@cond none
+namespace cds {
+    namespace bitop { namespace platform { namespace gcc { namespace Sparc {
+
+        // MSB - return index (1..64) of most significant bit in nArg. If nArg == 0 return 0
+        // Source: UltraSPARC Architecture 2007
+        //
+        // Test result: this variant and its variation about 100 times slower then generic implementation :-(
+        static inline int sparc_msb64( uint64_t nArg )
+        {
+            uint64_t result;
+            asm volatile (
+                "neg %[nArg], %[result] \n\t"
+                "xnor %[nArg], %[result], %%g5 \n\t"
+                "popc %%g5, %[result] \n\t"
+                "movrz %[nArg], %%g0, %[result] \n\t"
+                : [result] "=r" (result)
+                : [nArg] "r" (nArg)
+                : "g5"
+            );
+            return result;
+        }
+
+        // MSB - return index (1..32) of most significant bit in nArg. If nArg == 0 return 0
+        static inline int sparc_msb32( uint32_t nArg )
+        {
+            return sparc_msb64( (uint64_t) nArg );
+        }
+
+    }} // namespace gcc::Sparc
+
+    using namespace gcc::Sparc;
+
+}}}    // namespace cds::bitop::platform
+//@endcond
+
+#endif // #ifndef CDSLIB_COMPILER_GCC_SPARC_BITOP_H