text: /*
  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.
  */
  #ifndef __icpcfeatures_dot_hpp
  #define __icpcfeatures_dot_hpp
  
  // icc relies on gcc libraries and other toolchain components.
  #define R123_GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
  
  #if !defined(__x86_64__) && !defined(__i386__)
  #error "This code has only been tested on x86 platforms."
  {  // maybe an unbalanced brace will terminate the compilation
  // You are invited to try Easy123 on other architectures, by changing
  // the conditions that reach this error, but you should consider it a
  // porting exercise and expect to encounter bugs and deficiencies.
  // Please let the authors know of any successes (or failures).
  #endif
  
  #ifndef R123_STATIC_INLINE
  #define R123_STATIC_INLINE static inline
  #endif
  
  #ifndef R123_FORCE_INLINE
  #define R123_FORCE_INLINE(decl) decl __attribute__((always_inline))
  #endif
  
  #ifndef R123_CUDA_DEVICE
  #define R123_CUDA_DEVICE
  #endif
  
  #ifndef R123_ASSERT
  #include <assert.h>
  #define R123_ASSERT(x) assert(x)
  #endif
  
  #ifndef R123_BUILTIN_EXPECT
  #define R123_BUILTIN_EXPECT(expr, likely) __builtin_expect(expr, likely)
  #endif
  
  // The basic idiom is:
  // #ifndef R123_SOMETHING
  // #if some condition
  // #define R123_SOMETHING 1
  // #else
  // #define R123_SOMETHING 0
  // #endif
  // #endif
  // This idiom allows an external user to override any decision
  // in this file with a command-line -DR123_SOMETHING=1 or -DR123_SOMETHINE=0
  
  // An alternative idiom is:
  // #ifndef R123_SOMETHING
  // #define R123_SOMETHING (some boolean expression)
  // #endif
  // where the boolean expression might contain previously-defined R123_SOMETHING_ELSE
  // pp-symbols.
  
  #ifndef R123_USE_SSE4_2
  #ifdef __SSE4_2__
  #define R123_USE_SSE4_2 1
  #else
  #define R123_USE_SSE4_2 0
  #endif
  #endif
  
  #ifndef R123_USE_SSE4_1
  #ifdef __SSE4_1__
  #define R123_USE_SSE4_1 1
  #else
  #define R123_USE_SSE4_1 0
  #endif
  #endif
  
  #ifndef R123_USE_SSE
  #ifdef __SSE2__
  #define R123_USE_SSE 1
  #else
  #define R123_USE_SSE 0
  #endif
  #endif
  
  #ifndef R123_USE_AES_NI
  // Unlike gcc, icc (version 12) does not pre-define an __AES__
  // pp-symbol when -maes or -xHost is on the command line.  This feels
  // like a defect in icc (it defines __SSE4_2__ in analogous
  // circumstances), but until Intel fixes it, we're better off erring
  // on the side of caution and not generating instructions that are
  // going to raise SIGILL when executed.  To get the AES-NI
  // instructions with icc, the caller must puts something like
  // -DR123_USE_AES_NI=1 or -D__AES__ on the command line.  FWIW, the
  // AES-NI Whitepaper by Gueron says that icc has supported AES-NI from
  // 11.1 onwards.
  //
  #define R123_USE_AES_NI ((__ICC >= 1101) && defined(__AES__))
  #endif
  
  #ifndef R123_USE_AES_OPENSSL
  /* There isn't really a good way to tell at compile time whether
     openssl is available.  Without a pre-compilation configure-like
     tool, it's less error-prone to guess that it isn't available.  Add
     -DR123_USE_AES_OPENSSL=1 and any necessary LDFLAGS or LDLIBS to
     play with openssl */
  #define R123_USE_AES_OPENSSL 0
  #endif
  
  #ifndef R123_USE_GNU_UINT128
  #define R123_USE_GNU_UINT128 0
  #endif
  
  #ifndef R123_USE_ASM_GNU
  #define R123_USE_ASM_GNU 1
  #endif
  
  #ifndef R123_USE_CPUID_MSVC
  #define R123_USE_CPUID_MSVC 0
  #endif
  
  #ifndef R123_USE_X86INTRIN_H
  #define R123_USE_X86INTRIN_H 0
  #endif
  
  #ifndef R123_USE_IA32INTRIN_H
  #define R123_USE_IA32INTRIN_H 1
  #endif
  
  #ifndef R123_USE_XMMINTRIN_H
  #define R123_USE_XMMINTRIN_H 0
  #endif
  
  #ifndef R123_USE_EMMINTRIN_H
  #define R123_USE_EMMINTRIN_H 1
  #endif
  
  #ifndef R123_USE_SMMINTRIN_H
  #define R123_USE_SMMINTRIN_H 1
  #endif
  
  #ifndef R123_USE_WMMINTRIN_H
  #define R123_USE_WMMINTRIN_H 1
  #endif
  
  #ifndef R123_USE_INTRIN_H
  #define R123_USE_INTRIN_H 0
  #endif
  
  #ifndef R123_USE_MULHILO16_ASM
  #define R123_USE_MULHILO16_ASM 0
  #endif
  
  #ifndef R123_USE_MULHILO32_ASM
  #define R123_USE_MULHILO32_ASM 0
  #endif
  
  #ifndef R123_USE_MULHILO64_ASM
  #define R123_USE_MULHILO64_ASM 1
  #endif
  
  #ifndef R123_USE_MULHILO64_MSVC_INTRIN
  #define R123_USE_MULHILO64_MSVC_INTRIN 0
  #endif
  
  #ifndef R123_USE_MULHILO64_CUDA_INTRIN
  #define R123_USE_MULHILO64_CUDA_INTRIN 0
  #endif
  
  #ifndef R123_USE_MULHILO64_OPENCL_INTRIN
  #define R123_USE_MULHILO64_OPENCL_INTRIN 0
  #endif
  
  #ifndef __STDC_CONSTANT_MACROS
  #define __STDC_CONSTANT_MACROS
  #endif
  #include <stdint.h>
  #ifndef UINT64_C
  #error UINT64_C not defined.  You must define __STDC_CONSTANT_MACROS before you #include <stdint.h>
  #endif
  
  // If you add something, it must go in all the other XXfeatures.hpp
  // and in ../ut_features.cpp
  #endif
  