1use super::*;
2
3pub unsafe trait Zeroable: Sized {
26 #[inline]
32 fn zeroed() -> Self {
33 unsafe { core::mem::zeroed() }
34 }
35}
36unsafe impl Zeroable for () {}
37unsafe impl Zeroable for bool {}
38unsafe impl Zeroable for char {}
39unsafe impl Zeroable for u8 {}
40unsafe impl Zeroable for i8 {}
41unsafe impl Zeroable for u16 {}
42unsafe impl Zeroable for i16 {}
43unsafe impl Zeroable for u32 {}
44unsafe impl Zeroable for i32 {}
45unsafe impl Zeroable for u64 {}
46unsafe impl Zeroable for i64 {}
47unsafe impl Zeroable for usize {}
48unsafe impl Zeroable for isize {}
49unsafe impl Zeroable for u128 {}
50unsafe impl Zeroable for i128 {}
51#[cfg(feature = "nightly_float")]
52unsafe impl Zeroable for f16 {}
53unsafe impl Zeroable for f32 {}
54unsafe impl Zeroable for f64 {}
55#[cfg(feature = "nightly_float")]
56unsafe impl Zeroable for f128 {}
57unsafe impl<T: Zeroable> Zeroable for Wrapping<T> {}
58unsafe impl<T: Zeroable> Zeroable for core::cmp::Reverse<T> {}
59
60unsafe impl<T> Zeroable for *mut T {}
65unsafe impl<T> Zeroable for *const T {}
66unsafe impl<T> Zeroable for *mut [T] {}
67unsafe impl<T> Zeroable for *const [T] {}
68unsafe impl Zeroable for *mut str {}
69unsafe impl Zeroable for *const str {}
70
71unsafe impl<T: ?Sized> Zeroable for PhantomData<T> {}
72unsafe impl Zeroable for PhantomPinned {}
73unsafe impl<T: Zeroable> Zeroable for core::mem::ManuallyDrop<T> {}
74unsafe impl<T: Zeroable> Zeroable for core::cell::UnsafeCell<T> {}
75unsafe impl<T: Zeroable> Zeroable for core::cell::Cell<T> {}
76
77#[cfg(feature = "zeroable_atomics")]
78#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "zeroable_atomics")))]
79mod atomic_impls {
80 use super::Zeroable;
81
82 #[cfg(target_has_atomic = "8")]
83 unsafe impl Zeroable for core::sync::atomic::AtomicBool {}
84 #[cfg(target_has_atomic = "8")]
85 unsafe impl Zeroable for core::sync::atomic::AtomicU8 {}
86 #[cfg(target_has_atomic = "8")]
87 unsafe impl Zeroable for core::sync::atomic::AtomicI8 {}
88
89 #[cfg(target_has_atomic = "16")]
90 unsafe impl Zeroable for core::sync::atomic::AtomicU16 {}
91 #[cfg(target_has_atomic = "16")]
92 unsafe impl Zeroable for core::sync::atomic::AtomicI16 {}
93
94 #[cfg(target_has_atomic = "32")]
95 unsafe impl Zeroable for core::sync::atomic::AtomicU32 {}
96 #[cfg(target_has_atomic = "32")]
97 unsafe impl Zeroable for core::sync::atomic::AtomicI32 {}
98
99 #[cfg(target_has_atomic = "64")]
100 unsafe impl Zeroable for core::sync::atomic::AtomicU64 {}
101 #[cfg(target_has_atomic = "64")]
102 unsafe impl Zeroable for core::sync::atomic::AtomicI64 {}
103
104 #[cfg(target_has_atomic = "ptr")]
105 unsafe impl Zeroable for core::sync::atomic::AtomicUsize {}
106 #[cfg(target_has_atomic = "ptr")]
107 unsafe impl Zeroable for core::sync::atomic::AtomicIsize {}
108
109 #[cfg(target_has_atomic = "ptr")]
110 unsafe impl<T> Zeroable for core::sync::atomic::AtomicPtr<T> {}
111}
112
113#[cfg(feature = "zeroable_maybe_uninit")]
114#[cfg_attr(
115 feature = "nightly_docs",
116 doc(cfg(feature = "zeroable_maybe_uninit"))
117)]
118unsafe impl<T> Zeroable for core::mem::MaybeUninit<T> {}
119
120unsafe impl<A: Zeroable> Zeroable for (A,) {}
121unsafe impl<A: Zeroable, B: Zeroable> Zeroable for (A, B) {}
122unsafe impl<A: Zeroable, B: Zeroable, C: Zeroable> Zeroable for (A, B, C) {}
123unsafe impl<A: Zeroable, B: Zeroable, C: Zeroable, D: Zeroable> Zeroable
124 for (A, B, C, D)
125{
126}
127unsafe impl<A: Zeroable, B: Zeroable, C: Zeroable, D: Zeroable, E: Zeroable>
128 Zeroable for (A, B, C, D, E)
129{
130}
131unsafe impl<
132 A: Zeroable,
133 B: Zeroable,
134 C: Zeroable,
135 D: Zeroable,
136 E: Zeroable,
137 F: Zeroable,
138 > Zeroable for (A, B, C, D, E, F)
139{
140}
141unsafe impl<
142 A: Zeroable,
143 B: Zeroable,
144 C: Zeroable,
145 D: Zeroable,
146 E: Zeroable,
147 F: Zeroable,
148 G: Zeroable,
149 > Zeroable for (A, B, C, D, E, F, G)
150{
151}
152unsafe impl<
153 A: Zeroable,
154 B: Zeroable,
155 C: Zeroable,
156 D: Zeroable,
157 E: Zeroable,
158 F: Zeroable,
159 G: Zeroable,
160 H: Zeroable,
161 > Zeroable for (A, B, C, D, E, F, G, H)
162{
163}
164
165#[cfg(feature = "min_const_generics")]
166#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "min_const_generics")))]
167unsafe impl<T, const N: usize> Zeroable for [T; N] where T: Zeroable {}
168
169#[cfg(not(feature = "min_const_generics"))]
170impl_unsafe_marker_for_array!(
171 Zeroable, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
172 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 48, 64, 96, 128, 256,
173 512, 1024, 2048, 4096
174);
175
176impl_unsafe_marker_for_simd!(
177 #[cfg(all(target_arch = "wasm32", feature = "wasm_simd"))]
178 unsafe impl Zeroable for wasm32::{v128}
179);
180
181impl_unsafe_marker_for_simd!(
182 #[cfg(all(target_arch = "aarch64", feature = "aarch64_simd"))]
183 unsafe impl Zeroable for aarch64::{
184 float32x2_t, float32x2x2_t, float32x2x3_t, float32x2x4_t, float32x4_t,
185 float32x4x2_t, float32x4x3_t, float32x4x4_t, float64x1_t, float64x1x2_t,
186 float64x1x3_t, float64x1x4_t, float64x2_t, float64x2x2_t, float64x2x3_t,
187 float64x2x4_t, int16x4_t, int16x4x2_t, int16x4x3_t, int16x4x4_t, int16x8_t,
188 int16x8x2_t, int16x8x3_t, int16x8x4_t, int32x2_t, int32x2x2_t, int32x2x3_t,
189 int32x2x4_t, int32x4_t, int32x4x2_t, int32x4x3_t, int32x4x4_t, int64x1_t,
190 int64x1x2_t, int64x1x3_t, int64x1x4_t, int64x2_t, int64x2x2_t, int64x2x3_t,
191 int64x2x4_t, int8x16_t, int8x16x2_t, int8x16x3_t, int8x16x4_t, int8x8_t,
192 int8x8x2_t, int8x8x3_t, int8x8x4_t, poly16x4_t, poly16x4x2_t, poly16x4x3_t,
193 poly16x4x4_t, poly16x8_t, poly16x8x2_t, poly16x8x3_t, poly16x8x4_t,
194 poly64x1_t, poly64x1x2_t, poly64x1x3_t, poly64x1x4_t, poly64x2_t,
195 poly64x2x2_t, poly64x2x3_t, poly64x2x4_t, poly8x16_t, poly8x16x2_t,
196 poly8x16x3_t, poly8x16x4_t, poly8x8_t, poly8x8x2_t, poly8x8x3_t, poly8x8x4_t,
197 uint16x4_t, uint16x4x2_t, uint16x4x3_t, uint16x4x4_t, uint16x8_t,
198 uint16x8x2_t, uint16x8x3_t, uint16x8x4_t, uint32x2_t, uint32x2x2_t,
199 uint32x2x3_t, uint32x2x4_t, uint32x4_t, uint32x4x2_t, uint32x4x3_t,
200 uint32x4x4_t, uint64x1_t, uint64x1x2_t, uint64x1x3_t, uint64x1x4_t,
201 uint64x2_t, uint64x2x2_t, uint64x2x3_t, uint64x2x4_t, uint8x16_t,
202 uint8x16x2_t, uint8x16x3_t, uint8x16x4_t, uint8x8_t, uint8x8x2_t,
203 uint8x8x3_t, uint8x8x4_t,
204 }
205);
206
207impl_unsafe_marker_for_simd!(
208 #[cfg(target_arch = "x86")]
209 unsafe impl Zeroable for x86::{
210 __m128i, __m128, __m128d,
211 __m256i, __m256, __m256d,
212 }
213);
214
215impl_unsafe_marker_for_simd!(
216 #[cfg(target_arch = "x86_64")]
217 unsafe impl Zeroable for x86_64::{
218 __m128i, __m128, __m128d,
219 __m256i, __m256, __m256d,
220 }
221);
222
223#[cfg(feature = "nightly_portable_simd")]
224#[cfg_attr(
225 feature = "nightly_docs",
226 doc(cfg(feature = "nightly_portable_simd"))
227)]
228unsafe impl<T, const N: usize> Zeroable for core::simd::Simd<T, N>
229where
230 T: core::simd::SimdElement + Zeroable,
231 core::simd::LaneCount<N>: core::simd::SupportedLaneCount,
232{
233}
234
235impl_unsafe_marker_for_simd!(
236 #[cfg(all(target_arch = "x86", feature = "nightly_stdsimd"))]
237 unsafe impl Zeroable for x86::{
238 __m128bh, __m256bh, __m512,
239 __m512bh, __m512d, __m512i,
240 }
241);
242
243impl_unsafe_marker_for_simd!(
244 #[cfg(all(target_arch = "x86_64", feature = "nightly_stdsimd"))]
245 unsafe impl Zeroable for x86_64::{
246 __m128bh, __m256bh, __m512,
247 __m512bh, __m512d, __m512i,
248 }
249);