/usr/include/viennacl/ocl/utils.hpp is in libviennacl-dev 1.7.1+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | #ifndef VIENNACL_OCL_UTILS_HPP_
#define VIENNACL_OCL_UTILS_HPP_
/* =========================================================================
Copyright (c) 2010-2016, Institute for Microelectronics,
Institute for Analysis and Scientific Computing,
TU Wien.
Portions of this software are copyright by UChicago Argonne, LLC.
-----------------
ViennaCL - The Vienna Computing Library
-----------------
Project Head: Karl Rupp rupp@iue.tuwien.ac.at
(A list of authors and contributors can be found in the manual)
License: MIT (X11), see file LICENSE in the base directory
============================================================================= */
/** @file viennacl/ocl/utils.hpp
@brief Provides OpenCL-related utilities.
*/
#include <vector>
#include <string>
#include "viennacl/ocl/backend.hpp"
#include "viennacl/ocl/device.hpp"
namespace viennacl
{
namespace ocl
{
/** @brief Ensures that double precision types are only allocated if it is supported by the device. If double precision is requested for a device not capable of providing that, a double_precision_not_provided_error is thrown.
*/
template<typename ScalarType>
struct DOUBLE_PRECISION_CHECKER
{
static void apply(viennacl::ocl::context const &) {}
};
/** \cond */
template<>
struct DOUBLE_PRECISION_CHECKER<double>
{
static void apply(viennacl::ocl::context const & ctx)
{
if (!ctx.current_device().double_support())
throw viennacl::ocl::double_precision_not_provided_error();
}
};
/** \endcond */
/** \brief Helper class for converting a type to its string representation. */
template<typename T>
struct type_to_string;
/** \cond */
template<> struct type_to_string<char> { static std::string apply() { return "char"; } };
template<> struct type_to_string<short> { static std::string apply() { return "short"; } };
template<> struct type_to_string<int> { static std::string apply() { return "int"; } };
template<> struct type_to_string<long> { static std::string apply() { return "long"; } };
template<> struct type_to_string<unsigned char> { static std::string apply() { return "uchar"; } };
template<> struct type_to_string<unsigned short> { static std::string apply() { return "ushort"; } };
template<> struct type_to_string<unsigned int> { static std::string apply() { return "uint"; } };
template<> struct type_to_string<unsigned long> { static std::string apply() { return "ulong"; } };
template<> struct type_to_string<float> { static std::string apply() { return "float"; } };
template<> struct type_to_string<double> { static std::string apply() { return "double"; } };
/** \endcond */
template<typename T>
void append_double_precision_pragma(viennacl::ocl::context const & /*ctx*/, std::string & /*source*/) {}
template<>
inline void append_double_precision_pragma<double>(viennacl::ocl::context const & ctx, std::string & source)
{
source.append("#pragma OPENCL EXTENSION " + ctx.current_device().double_support_extension() + " : enable\n\n");
}
} //ocl
} //viennacl
#endif
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