/usr/include/blitz/compiler.h is in libblitz0-dev 1:0.10-3.3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/***************************************************************************
* blitz/compiler.h Compiler specific directives and kludges
*
* Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org>
*
* This file is a part of Blitz.
*
* Blitz is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Blitz is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Blitz. If not, see <http://www.gnu.org/licenses/>.
*
* Suggestions: blitz-devel@lists.sourceforge.net
* Bugs: blitz-support@lists.sourceforge.net
*
* For more information, please see the Blitz++ Home Page:
* https://sourceforge.net/projects/blitz/
*
***************************************************************************/
#ifndef BZ_COMPILER_H
#define BZ_COMPILER_H
// The file <blitz/bzconfig.h> is used to select a compiler-specific
// config.h file that is generated automatically by configure.
#include <blitz/bzconfig.h>
/*
* Define some kludges.
*/
#ifndef BZ_HAVE_TEMPLATES
#error In <blitz/config.h>: A working template implementation is required by Blitz++ (you may need to rerun the compiler/bzconfig script)
#endif
#ifndef BZ_HAVE_MEMBER_TEMPLATES
#error In <blitz/config.h>: Your compiler does not support member templates. (you may need to rerun the compiler/bzconfig script)
#endif
#ifndef BZ_HAVE_FULL_SPECIALIZATION_SYNTAX
#error In <blitz/config.h>: Your compiler does not support template<> full specialization syntax. You may need to rerun the compiler/bzconfig script.
#endif
#ifndef BZ_HAVE_PARTIAL_ORDERING
#error In <blitz/config.h>: Your compiler does not support partial ordering (you may need to rerun the compiler/bzconfig script)
#endif
#ifndef BZ_HAVE_PARTIAL_SPECIALIZATION
#error In <blitz/config.h>: Your compiler does not support partial specialization (you may need to rerun the compiler/bzconfig script)
#endif
#ifdef BZ_HAVE_NAMESPACES
#define BZ_NAMESPACE(X) namespace X {
#define BZ_NAMESPACE_END }
#define BZ_USING_NAMESPACE(X) using namespace X;
#else
#define BZ_NAMESPACE(X)
#define BZ_NAMESPACE_END
#define BZ_USING_NAMESPACE(X)
#endif
#ifdef BZ_HAVE_TEMPLATE_QUALIFIED_RETURN_TYPE
#define BZ_USE_NUMTRAIT
#endif
#ifdef BZ_HAVE_DEFAULT_TEMPLATE_PARAMETERS
#define BZ_TEMPLATE_DEFAULT(X) = X
#else
#define BZ_TEMPLATE_DEFAULT(X)
#endif
#ifndef BZ_HAVE_EXPLICIT
#define explicit
#endif
#ifdef BZ_HAVE_TYPENAME
#define _bz_typename typename
#else
#define _bz_typename
#endif
#ifndef BZ_HAVE_MUTABLE
#define mutable
#endif
#ifdef BZ_DISABLE_RESTRICT
#undef BZ_HAVE_NCEG_RESTRICT
#endif
#ifndef BZ_HAVE_NCEG_RESTRICT
#if defined(BZ_HAVE_NCEG_RESTRICT_EGCS)
#define restrict __restrict__
#else
#define restrict
#endif
#endif
#if !defined(BZ_HAVE_BOOL) && !defined(BZ_NO_BOOL_KLUDGE)
#define bool int
#define true 1
#define false 0
#endif
#ifdef BZ_HAVE_ENUM_COMPUTATIONS_WITH_CAST
#define BZ_ENUM_CAST(X) (int)X
#elif defined(BZ_HAVE_ENUM_COMPUTATIONS)
#define BZ_ENUM_CAST(X) X
#else
#error In <blitz/config.h>: Your compiler does not support enum computations. You may have to rerun compiler/bzconfig.
#endif
#if defined(BZ_MATH_FN_IN_NAMESPACE_STD)
#define BZ_MATHFN_SCOPE(x) std::x
#elif defined(BZ_HAVE_NAMESPACES)
#define BZ_MATHFN_SCOPE(x) ::x
#else
#define BZ_MATHFN_SCOPE(x) x
#endif
#if defined(BZ_MATH_ABSINT_IN_NAMESPACE_STD)
#include <cstdlib>
#else
#include <stdlib.h>
#endif
#if defined(BZ_MATH_ABSINT_IN_NAMESPACE_STD)
#define BZ_MATHABSINT_SCOPE(x) std::x
#elif defined(BZ_HAVE_NAMESPACES)
#define BZ_MATHABSINT_SCOPE(x) ::x
#else
#define BZ_MATHABSINT_SCOPE(x) x
#endif
#if defined(BZ_HAVE_COMPLEX_MATH_IN_NAMESPACE_STD)
#define BZ_CMATHFN_SCOPE(x) std::x
#elif defined(BZ_HAVE_NAMESPACES)
#define BZ_CMATHFN_SCOPE(x) ::x
#else
#define BZ_CMATHFN_SCOPE(x) x
#endif
#if defined(BZ_HAVE_NAMESPACES)
#define BZ_IEEEMATHFN_SCOPE(x) ::x
#else
#define BZ_IEEEMATHFN_SCOPE(x) x
#endif
#if defined(BZ_HAVE_NAMESPACES)
#define BZ_BLITZ_SCOPE(x) blitz::x
#else
#define BZ_BLITZ_SCOPE(x) ::x
#endif
#if defined(BZ_HAVE_NAMESPACES) && defined(BZ_HAVE_STD)
#define BZ_STD_SCOPE(x) std::x
#else
#define BZ_STD_SCOPE(x) ::x
#endif
// These macros are just markers to document the code in the places
// where playing with the processor branch prediction scheme might
// help. For now these are just nops.
#define BZ_LIKELY(x) (x)
#define BZ_UNLIKELY(x) (x)
#endif // BZ_COMPILER_H
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