Random123/features/compilerfeatures.h

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/*
Copyright 2010-2011, D. E. Shaw Research.
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 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.

* Neither the name of D. E. Shaw Research 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 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
OWNER 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.
*/
/* 
N.B.  When something is added to the list of features, it should be
added to each of the *features.h files, AND to examples/ut_features.cpp.
*/

/* N.B.  most other compilers (icc, nvcc, open64, llvm) will also define __GNUC__, so order matters. */
#if defined(__ICC)
#include "iccfeatures.h"
#elif defined(__CUDACC__)
#include "nvccfeatures.h"
#elif defined(__OPENCL_VERSION__) && __OPENCL_VERSION__ > 0
#include "openclfeatures.h"
#elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
#include "sunprofeatures.h"
#elif defined(__OPEN64__)
#include "open64features.h"
#elif defined(__llvm__)
#include "llvmfeatures.h"
#elif defined(__GNUC__)
#include "gccfeatures.h"
#elif defined(_MSC_FULL_VER)
#include "msvcfeatures.h"
#else
#error "Can't identify compiler.  You'll need to add a new xxfeatures.hpp"
{ /* maybe an unbalanced brace will terminate the compilation */
#endif

#ifndef R123_STATIC_ASSERT
#if R123_USE_CXX0X
#define R123_STATIC_ASSERT(expr, msg) static_assert(expr, msg)
#else
    /* if msg always_looked_like_this, we could paste it into the name.  Worth it? */
#define R123_STATIC_ASSERT(expr, msg) typedef char static_assertion[(!!(expr))*2-1]
#endif
#endif

#ifndef R123_USE_PHILOX_64BIT
#define R123_USE_PHILOX_64BIT (R123_USE_MULHILO64_ASM || R123_USE_MULHILO64_MSVC_INTRIN || R123_USE_MULHILO64_CUDA_INTRIN || R123_USE_GNU_UINT128 || R123_USE_MULHILO64_C99 || R123_USE_MULHILO64_OPENCL_INTRIN)
#endif

#ifndef R123_ULONG_LONG
#if defined(__cplusplus) && !R123_USE_CXX0X
/* C++98 doesn't have long long, so fall back to uint64_t which
   might be typedefed to something that doesn't elicit
   complaints from -pedantic.  Cross your fingers... */
#define R123_ULONG_LONG uint64_t
#else
#define R123_ULONG_LONG unsigned long long
#endif
#endif

/* UINT64_C should have been #defined by XXXfeatures.h, either by
   #include <stdint.h> or through compiler-dependent hacks */
#ifndef R123_64BIT
#define R123_64BIT(x) UINT64_C(x)
#endif

#ifndef R123_THROW
#define R123_THROW(x)    throw (x)
#endif