Diff of /branches/cuda/src/lib/include/diderot/util.cuh

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	revision 5625, Thu Aug 5 22:07:32 2021 UTC	revision 5626, Thu Aug 19 23:05:45 2021 UTC
#	Line 11	Line 11
11	* COPYRIGHT (c) 2017 The University of Chicago	* COPYRIGHT (c) 2017 The University of Chicago
12	* All rights reserved.	* All rights reserved.
13	*/	*/
14	#ifndef _DIDEROT_UTIL_HXX_	#ifndef _DIDEROT_UTIL_HXX_
15	#define _DIDEROT_UTIL_HXX_	#define _DIDEROT_UTIL_HXX_
16
17
18	namespace diderot {	namespace diderot {
19
20	// similar to the std::array type, but stripped down	// similar to the std::array type, but stripped down
#	Line 24	Line 24
24	typedef value_type &reference;	typedef value_type &reference;
25	typedef const value_type &const_reference;	typedef const value_type &const_reference;
26
27		HD
28		array() = default;
29
30		template <typename... Args>
31		HD
32		array(Args&&... values) : _elems{values...} {}
33
34		HD
35		array(array *copy) {
36		std::copy(std::begin(copy->_elems), std::end(copy->_elems), std::begin(_elems));
37		}
38
39	value_type      _elems[SZ];	value_type      _elems[SZ];
40
41	HD	HD
42	reference operator[] (size_t i) noexcept { return _elems[i]; }	reference operator[] (size_t i) noexcept { return _elems[i]; }
43
44	HD	HD
45	const_reference operator[] (size_t i) const noexcept { return _elems[i]; }	const_reference operator[] (size_t i) const noexcept { return _elems[i]; }
46
47	HD	HD
48	value_type *data () noexcept { return _elems; }	value_type *data () noexcept { return _elems; }
49
50	HD	HD
51	const value_type* data () const noexcept { return _elems; }	const value_type* data () const noexcept { return _elems; }
52
53	HD	HD
54	size_t size () const noexcept { return SZ; }	size_t size () const noexcept { return SZ; }
55
#	Line 44	Line 61
61	return cudaMemcpy(tgt->_elems, this->_elems, sizeof(T) * SZ, cudaMemcpyHostToDevice);	return cudaMemcpy(tgt->_elems, this->_elems, sizeof(T) * SZ, cudaMemcpyHostToDevice);
62	}	}
63	};	};
64
65	HD	HD
66	inline float sign (float x) { return (x > 0) - (x < 0); }	inline float sign (float x) { return (x > 0) - (x < 0); }
67
68	HD	HD
69	inline double sign (double x) { return (x > 0) - (x < 0); }	inline double sign (double x) { return (x > 0) - (x < 0); }
70
71	namespace __details {	namespace __details {
72
73	//! set the properties of an output stream (precision and alphabool)	//! set the properties of an output stream (precision and alphabool)
74	inline void config_ostream (std::ostream &os)	inline void config_ostream(std::ostream &os) {
	{
75	os << std::boolalpha;	os << std::boolalpha;
76	#ifdef DIDEROT_SINGLE_PRECISION	#ifdef DIDEROT_SINGLE_PRECISION
77	// based on https://en.wikipedia.org/wiki/Single-precision_floating-point_format	// based on https://en.wikipedia.org/wiki/Single-precision_floating-point_format

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