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1/// @ref gtc_constants
2/// @file glm/gtc/constants.inl
3
4#include <limits>
5
6namespace glm
7{
8	template <typename genType>
9	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType epsilon()
10	{
11		return std::numeric_limits<genType>::epsilon();
12	}
13
14	template <typename genType>
15	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType zero()
16	{
17		return genType(0);
18	}
19
20	template <typename genType>
21	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType one()
22	{
23		return genType(1);
24	}
25
26	template <typename genType>
27	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType pi()
28	{
29		return genType(3.14159265358979323846264338327950288);
30	}
31
32	template <typename genType>
33	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType two_pi()
34	{
35		return genType(6.28318530717958647692528676655900576);
36	}
37
38	template <typename genType>
39	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_pi()
40	{
41		return genType(1.772453850905516027);
42	}
43
44	template <typename genType>
45	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType half_pi()
46	{
47		return genType(1.57079632679489661923132169163975144);
48	}
49
50	template <typename genType>
51	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType three_over_two_pi()
52	{
53		return genType(4.71238898038468985769396507491925432);
54	}
55
56	template <typename genType>
57	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType quarter_pi()
58	{
59		return genType(0.785398163397448309615660845819875721);
60	}
61
62	template <typename genType>
63	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType one_over_pi()
64	{
65		return genType(0.318309886183790671537767526745028724);
66	}
67
68	template <typename genType>
69	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType one_over_two_pi()
70	{
71		return genType(0.159154943091895335768883763372514362);
72	}
73
74	template <typename genType>
75	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType two_over_pi()
76	{
77		return genType(0.636619772367581343075535053490057448);
78	}
79
80	template <typename genType>
81	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType four_over_pi()
82	{
83		return genType(1.273239544735162686151070106980114898);
84	}
85
86	template <typename genType>
87	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType two_over_root_pi()
88	{
89		return genType(1.12837916709551257389615890312154517);
90	}
91
92	template <typename genType>
93	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType one_over_root_two()
94	{
95		return genType(0.707106781186547524400844362104849039);
96	}
97
98	template <typename genType>
99	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_half_pi()
100	{
101		return genType(1.253314137315500251);
102	}
103
104	template <typename genType>
105	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_two_pi()
106	{
107		return genType(2.506628274631000502);
108	}
109
110	template <typename genType>
111	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_ln_four()
112	{
113		return genType(1.17741002251547469);
114	}
115
116	template <typename genType>
117	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType e()
118	{
119		return genType(2.71828182845904523536);
120	}
121
122	template <typename genType>
123	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType euler()
124	{
125		return genType(0.577215664901532860606);
126	}
127
128	template <typename genType>
129	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_two()
130	{
131		return genType(1.41421356237309504880168872420969808);
132	}
133
134	template <typename genType>
135	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_three()
136	{
137		return genType(1.73205080756887729352744634150587236);
138	}
139
140	template <typename genType>
141	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType root_five()
142	{
143		return genType(2.23606797749978969640917366873127623);
144	}
145
146	template <typename genType>
147	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType ln_two()
148	{
149		return genType(0.693147180559945309417232121458176568);
150	}
151
152	template <typename genType>
153	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType ln_ten()
154	{
155		return genType(2.30258509299404568401799145468436421);
156	}
157
158	template <typename genType>
159	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType ln_ln_two()
160	{
161		return genType(-0.3665129205816643);
162	}
163
164	template <typename genType>
165	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType third()
166	{
167		return genType(0.3333333333333333333333333333333333333333);
168	}
169
170	template <typename genType>
171	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType two_thirds()
172	{
173		return genType(0.666666666666666666666666666666666666667);
174	}
175
176	template <typename genType>
177	GLM_FUNC_QUALIFIER GLM_CONSTEXPR genType golden_ratio()
178	{
179		return genType(1.61803398874989484820458683436563811);
180	}
181} //namespace glm
182