user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add test examples

Browse source
This commit is contained in:
Caleb Zulawski 2022-11-11 21:31:05 -05:00
parent fd53445d05
commit bef4c41fc0
1 changed files with 54 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

54
crates/core_simd/src/vector.rs
View file

@ -373,6 +373,19 @@ where
/// # Safety
///
/// Each read must satisfy the same conditions as [`core::ptr::read`].
///
/// # Example
/// ```
/// # #![feature(portable_simd)]
/// # #[cfg(feature = "as_crate")] use core_simd::simd;
/// # #[cfg(not(feature = "as_crate"))] use core::simd;
/// # use simd::{Simd, SimdConstPtr};
/// let values = [6, 2, 4, 9];
/// let offsets = Simd::from_array([1, 0, 0, 3]);
/// let source = Simd::splat(values.as_ptr()).wrapping_add(offsets);
/// let gathered = unsafe { Simd::gather_ptr(source) };
/// assert_eq!(gathered, Simd::from_array([2, 6, 6, 9]));
/// ```
#[must_use]
#[inline]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
@ -392,6 +405,20 @@ where
/// # Safety
///
/// Enabled lanes must satisfy the same conditions as [`core::ptr::read`].
///
/// # Example
/// ```
/// # #![feature(portable_simd)]
/// # #[cfg(feature = "as_crate")] use core_simd::simd;
/// # #[cfg(not(feature = "as_crate"))] use core::simd;
/// # use simd::{Mask, Simd, SimdConstPtr};
/// let values = [6, 2, 4, 9];
/// let enable = Mask::from_array([true, true, false, true]);
/// let offsets = Simd::from_array([1, 0, 0, 3]);
/// let source = Simd::splat(values.as_ptr()).wrapping_add(offsets);
/// let gathered = unsafe { Simd::gather_select_ptr(source, enable, Simd::splat(0)) };
/// assert_eq!(gathered, Simd::from_array([2, 6, 0, 9]));
/// ```
#[must_use]
#[inline]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
@ -519,6 +546,19 @@ where
/// # Safety
///
/// Each write must satisfy the same conditions as [`core::ptr::write`].
///
/// # Example
/// ```
/// # #![feature(portable_simd)]
/// # #[cfg(feature = "as_crate")] use core_simd::simd;
/// # #[cfg(not(feature = "as_crate"))] use core::simd;
/// # use simd::{Simd, SimdMutPtr};
/// let mut values = [0; 4];
/// let offset = Simd::from_array([3, 2, 1, 0]);
/// let ptrs = Simd::splat(values.as_mut_ptr()).wrapping_add(offset);
/// unsafe { Simd::from_array([6, 3, 5, 7]).scatter_ptr(ptrs); }
/// assert_eq!(values, [7, 5, 3, 6]);
/// ```
#[inline]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
pub unsafe fn scatter_ptr(self, dest: Simd<*mut T, LANES>) {
@ -533,6 +573,20 @@ where
/// # Safety
///
/// Enabled lanes must satisfy the same conditions as [`core::ptr::write`].
///
/// # Example
/// ```
/// # #![feature(portable_simd)]
/// # #[cfg(feature = "as_crate")] use core_simd::simd;
/// # #[cfg(not(feature = "as_crate"))] use core::simd;
/// # use simd::{Mask, Simd, SimdMutPtr};
/// let mut values = [0; 4];
/// let offset = Simd::from_array([3, 2, 1, 0]);
/// let ptrs = Simd::splat(values.as_mut_ptr()).wrapping_add(offset);
/// let enable = Mask::from_array([true, true, false, false]);
/// unsafe { Simd::from_array([6, 3, 5, 7]).scatter_select_ptr(ptrs, enable); }
/// assert_eq!(values, [0, 0, 3, 6]);
/// ```
#[inline]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
pub unsafe fn scatter_select_ptr(self, dest: Simd<*mut T, LANES>, enable: Mask<isize, LANES>) {