basenc 0.2.3

Encoding and decoding hex, base64 and base32 with support for #[no_std].
Documentation 
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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157

// https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html

macro_rules! impl_arch_decode {
	(
		$signature:ty;
		$($target_arch:tt => {
			$($target_feature:ident: $target_feature_lit:literal $target_feature_detect:expr;)*
		},)*
	) => {
		cfg_if::cfg_if! {
			if #[cfg(feature = "simd-off")] {
				#[inline]
				pub fn decode_fn() -> $signature {
					scalar::decode
				}
			}
			else if #[cfg(feature = "simd-runtime")] {
				static mut DECODE: Option<$signature> = None;

				#[inline]
				pub fn decode_fn() -> $signature {
					unsafe {
						DECODE.unwrap_or_else(|| {
							let decode = decode_detect();
							DECODE = Some(decode);
							decode
						})
					}
				}

				cfg_if::cfg_if! {
					if #[cfg(any())] {}
					$(else if #[cfg $target_arch] {
						$(mod $target_feature;)*

						#[inline(never)]
						pub fn decode_detect() -> $signature {
							if false {unreachable!()}
							$(else if $target_feature_detect {
								return $target_feature::decode;
							})*
							else {
								return scalar::decode;
							}
						}
					})*
					else {
						#[inline]
						pub fn decode_detect() -> $signature {
							scalar::decode
						}
					}
				}

			}
			else {
				cfg_if::cfg_if! {
					if #[cfg(any())] {}
					$($(
						else if #[cfg(all(all $target_arch, target_feature = $target_feature_lit))] {
							mod $target_feature;

							#[inline]
							pub fn decode_fn() -> $signature {
								$target_feature::decode
							}
						}
					)*)*
					else {
						#[inline]
						pub fn decode_fn() -> $signature {
							scalar::decode
						}
					}
				}
			}
		}
	};
}

macro_rules! impl_arch_encode {
	(
		$signature:ty;
		$( $target_arch:tt => {
			$($target_feature:ident: $target_feature_lit:literal $target_feature_detect:expr;)*
		},)*
	) => {
		cfg_if::cfg_if! {
			if #[cfg(feature = "simd-off")] {
				#[inline]
				pub fn encode_fn() -> $signature {
					scalar::encode
				}
			}
			else if #[cfg(feature = "simd-runtime")] {
				static mut ENCODE: Option<$signature> = None;

				#[inline]
				pub fn encode_fn() -> $signature {
					unsafe {
						ENCODE.unwrap_or_else(|| {
							let encode = encode_detect();
							ENCODE = Some(encode);
							encode
						})
					}
				}

				cfg_if::cfg_if! {
					if #[cfg(any())] {}
					$(else if #[cfg $target_arch] {
						$(mod $target_feature;)*

						#[inline(never)]
						pub fn encode_detect() -> $signature {
							if false {unreachable!()}
							$(else if $target_feature_detect {
								return $target_feature::encode;
							})*
							else {
								return scalar::encode;
							}
						}
					})*
					else {
						#[inline]
						pub fn encode_detect() -> $signature {
							scalar::encode
						}
					}
				}

			}
			else {
				cfg_if::cfg_if! {
					if #[cfg(any())] {}
					$($(
						else if #[cfg(all(all $target_arch, target_feature = $target_feature_lit))] {
							mod $target_feature;

							#[inline]
							pub fn encode_fn() -> $signature {
								$target_feature::encode
							}
						}
					)*)*
					else {
						#[inline]
						pub fn encode_fn() -> $signature {
							scalar::encode
						}
					}
				}
			}
		}
	};
}