mirror of https://github.com/rust-lang/rust
665 lines
23 KiB
Rust
665 lines
23 KiB
Rust
//! SIMD compiler intrinsics.
|
|
//!
|
|
//! In this module, a "vector" is any `repr(simd)` type.
|
|
|
|
extern "rust-intrinsic" {
|
|
/// Insert an element into a vector, returning the updated vector.
|
|
///
|
|
/// `T` must be a vector with element type `U`.
|
|
///
|
|
/// # Safety
|
|
///
|
|
/// `idx` must be in-bounds of the vector.
|
|
#[rustc_nounwind]
|
|
pub fn simd_insert<T, U>(x: T, idx: u32, val: U) -> T;
|
|
|
|
/// Extract an element from a vector.
|
|
///
|
|
/// `T` must be a vector with element type `U`.
|
|
///
|
|
/// # Safety
|
|
///
|
|
/// `idx` must be in-bounds of the vector.
|
|
#[rustc_nounwind]
|
|
pub fn simd_extract<T, U>(x: T, idx: u32) -> U;
|
|
|
|
/// Add two simd vectors elementwise.
|
|
///
|
|
/// `T` must be a vector of integer or floating point primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_add<T>(x: T, y: T) -> T;
|
|
|
|
/// Subtract `rhs` from `lhs` elementwise.
|
|
///
|
|
/// `T` must be a vector of integer or floating point primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_sub<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Multiply two simd vectors elementwise.
|
|
///
|
|
/// `T` must be a vector of integer or floating point primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_mul<T>(x: T, y: T) -> T;
|
|
|
|
/// Divide `lhs` by `rhs` elementwise.
|
|
///
|
|
/// `T` must be a vector of integer or floating point primitive types.
|
|
///
|
|
/// # Safety
|
|
/// For integers, `rhs` must not contain any zero elements.
|
|
/// Additionally for signed integers, `<int>::MIN / -1` is undefined behavior.
|
|
#[rustc_nounwind]
|
|
pub fn simd_div<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Remainder of two vectors elementwise
|
|
///
|
|
/// `T` must be a vector of integer or floating point primitive types.
|
|
///
|
|
/// # Safety
|
|
/// For integers, `rhs` must not contain any zero elements.
|
|
/// Additionally for signed integers, `<int>::MIN / -1` is undefined behavior.
|
|
#[rustc_nounwind]
|
|
pub fn simd_rem<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Elementwise vector left shift, with UB on overflow.
|
|
///
|
|
/// Shift `lhs` left by `rhs`, shifting in sign bits for signed types.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
///
|
|
/// # Safety
|
|
///
|
|
/// Each element of `rhs` must be less than `<int>::BITS`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_shl<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Elementwise vector right shift, with UB on overflow.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
///
|
|
/// Shift `lhs` right by `rhs`, shifting in sign bits for signed types.
|
|
///
|
|
/// # Safety
|
|
///
|
|
/// Each element of `rhs` must be less than `<int>::BITS`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_shr<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Elementwise vector "and".
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_and<T>(x: T, y: T) -> T;
|
|
|
|
/// Elementwise vector "or".
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_or<T>(x: T, y: T) -> T;
|
|
|
|
/// Elementwise vector "exclusive or".
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_xor<T>(x: T, y: T) -> T;
|
|
|
|
/// Numerically cast a vector, elementwise.
|
|
///
|
|
/// `T` and `U` must be vectors of integer or floating point primitive types, and must have the
|
|
/// same length.
|
|
///
|
|
/// When casting floats to integers, the result is truncated. Out-of-bounds result lead to UB.
|
|
/// When casting integers to floats, the result is rounded.
|
|
/// Otherwise, truncates or extends the value, maintaining the sign for signed integers.
|
|
///
|
|
/// # Safety
|
|
/// Casting from integer types is always safe.
|
|
/// Casting between two float types is also always safe.
|
|
///
|
|
/// Casting floats to integers truncates, following the same rules as `to_int_unchecked`.
|
|
/// Specifically, each element must:
|
|
/// * Not be `NaN`
|
|
/// * Not be infinite
|
|
/// * Be representable in the return type, after truncating off its fractional part
|
|
#[rustc_nounwind]
|
|
pub fn simd_cast<T, U>(x: T) -> U;
|
|
|
|
/// Numerically cast a vector, elementwise.
|
|
///
|
|
/// `T` and `U` be a vectors of integer or floating point primitive types, and must have the
|
|
/// same length.
|
|
///
|
|
/// Like `simd_cast`, but saturates float-to-integer conversions (NaN becomes 0).
|
|
/// This matches regular `as` and is always safe.
|
|
///
|
|
/// When casting floats to integers, the result is truncated.
|
|
/// When casting integers to floats, the result is rounded.
|
|
/// Otherwise, truncates or extends the value, maintaining the sign for signed integers.
|
|
#[rustc_nounwind]
|
|
pub fn simd_as<T, U>(x: T) -> U;
|
|
|
|
/// Elementwise negation of a vector.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// Rust panics for `-<int>::Min` due to overflow, but it is not UB with this intrinsic.
|
|
#[rustc_nounwind]
|
|
pub fn simd_neg<T>(x: T) -> T;
|
|
|
|
/// Elementwise absolute value of a vector.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fabs<T>(x: T) -> T;
|
|
|
|
/// Elementwise minimum of two vectors.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// Follows IEEE-754 `minNum` semantics.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fmin<T>(x: T, y: T) -> T;
|
|
|
|
/// Elementwise maximum of two vectors.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// Follows IEEE-754 `maxNum` semantics.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fmax<T>(x: T, y: T) -> T;
|
|
|
|
/// Tests elementwise equality of two vectors.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_eq<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Tests elementwise inequality equality of two vectors.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_ne<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Tests if `x` is less than `y`, elementwise.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_lt<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Tests if `x` is less than or equal to `y`, elementwise.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_le<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Tests if `x` is greater than `y`, elementwise.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_gt<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Tests if `x` is greater than or equal to `y`, elementwise.
|
|
///
|
|
/// `T` must be a vector of floating-point primitive types.
|
|
///
|
|
/// `U` must be a vector of integers with the same number of elements and element size as `T`.
|
|
///
|
|
/// Returns `0` for false and `!0` for true.
|
|
#[rustc_nounwind]
|
|
pub fn simd_ge<T, U>(x: T, y: T) -> U;
|
|
|
|
/// Shuffle two vectors by const indices.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a **const** array of `i32`s. This means it must either refer to a named
|
|
/// const or be given as an inline const expression (`const { ... }`).
|
|
///
|
|
/// `V` must be a vector with the same element type as `T` and the same length as `U`.
|
|
///
|
|
/// Returns a new vector such that element `i` is selected from `xy[idx[i]]`, where `xy`
|
|
/// is the concatenation of `x` and `y`. It is a compile-time error if `idx[i]` is out-of-bounds
|
|
/// of `xy`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_shuffle<T, U, V>(x: T, y: T, idx: U) -> V;
|
|
|
|
/// Shuffle two vectors by const indices.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a vector with the same element type as `T` and the same length as `IDX`.
|
|
///
|
|
/// Returns a new vector such that element `i` is selected from `xy[IDX[i]]`, where `xy`
|
|
/// is the concatenation of `x` and `y`. It is a compile-time error if `IDX[i]` is out-of-bounds
|
|
/// of `xy`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_shuffle_generic<T, U, const IDX: &'static [u32]>(x: T, y: T) -> U;
|
|
|
|
/// Read a vector of pointers.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a vector of pointers to the element type of `T`, with the same length as `T`.
|
|
///
|
|
/// `V` must be a vector of integers with the same length as `T` (but any element size).
|
|
///
|
|
/// `idx` must be a constant: either naming a constant item, or an inline
|
|
/// `const {}` expression.
|
|
///
|
|
/// For each pointer in `ptr`, if the corresponding value in `mask` is `!0`, read the pointer.
|
|
/// Otherwise if the corresponding value in `mask` is `0`, return the corresponding value from
|
|
/// `val`.
|
|
///
|
|
/// # Safety
|
|
/// Unmasked values in `T` must be readable as if by `<ptr>::read` (e.g. aligned to the element
|
|
/// type).
|
|
///
|
|
/// `mask` must only contain `0` or `!0` values.
|
|
#[rustc_nounwind]
|
|
pub fn simd_gather<T, U, V>(val: T, ptr: U, mask: V) -> T;
|
|
|
|
/// Write to a vector of pointers.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a vector of pointers to the element type of `T`, with the same length as `T`.
|
|
///
|
|
/// `V` must be a vector of integers with the same length as `T` (but any element size).
|
|
///
|
|
/// For each pointer in `ptr`, if the corresponding value in `mask` is `!0`, write the
|
|
/// corresponding value in `val` to the pointer.
|
|
/// Otherwise if the corresponding value in `mask` is `0`, do nothing.
|
|
///
|
|
/// The stores happen in left-to-right order.
|
|
/// (This is relevant in case two of the stores overlap.)
|
|
///
|
|
/// # Safety
|
|
/// Unmasked values in `T` must be writeable as if by `<ptr>::write` (e.g. aligned to the element
|
|
/// type).
|
|
///
|
|
/// `mask` must only contain `0` or `!0` values.
|
|
#[rustc_nounwind]
|
|
pub fn simd_scatter<T, U, V>(val: T, ptr: U, mask: V);
|
|
|
|
/// Read a vector of pointers.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a pointer to the element type of `T`
|
|
///
|
|
/// `V` must be a vector of integers with the same length as `T` (but any element size).
|
|
///
|
|
/// For each element, if the corresponding value in `mask` is `!0`, read the corresponding
|
|
/// pointer offset from `ptr`.
|
|
/// The first element is loaded from `ptr`, the second from `ptr.wrapping_offset(1)` and so on.
|
|
/// Otherwise if the corresponding value in `mask` is `0`, return the corresponding value from
|
|
/// `val`.
|
|
///
|
|
/// # Safety
|
|
/// Unmasked values in `T` must be readable as if by `<ptr>::read` (e.g. aligned to the element
|
|
/// type).
|
|
///
|
|
/// `mask` must only contain `0` or `!0` values.
|
|
#[rustc_nounwind]
|
|
pub fn simd_masked_load<V, U, T>(mask: V, ptr: U, val: T) -> T;
|
|
|
|
/// Write to a vector of pointers.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// `U` must be a pointer to the element type of `T`
|
|
///
|
|
/// `V` must be a vector of integers with the same length as `T` (but any element size).
|
|
///
|
|
/// For each element, if the corresponding value in `mask` is `!0`, write the corresponding
|
|
/// value in `val` to the pointer offset from `ptr`.
|
|
/// The first element is written to `ptr`, the second to `ptr.wrapping_offset(1)` and so on.
|
|
/// Otherwise if the corresponding value in `mask` is `0`, do nothing.
|
|
///
|
|
/// # Safety
|
|
/// Unmasked values in `T` must be writeable as if by `<ptr>::write` (e.g. aligned to the element
|
|
/// type).
|
|
///
|
|
/// `mask` must only contain `0` or `!0` values.
|
|
#[rustc_nounwind]
|
|
pub fn simd_masked_store<V, U, T>(mask: V, ptr: U, val: T);
|
|
|
|
/// Add two simd vectors elementwise, with saturation.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
#[rustc_nounwind]
|
|
pub fn simd_saturating_add<T>(x: T, y: T) -> T;
|
|
|
|
/// Subtract two simd vectors elementwise, with saturation.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
///
|
|
/// Subtract `rhs` from `lhs`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_saturating_sub<T>(lhs: T, rhs: T) -> T;
|
|
|
|
/// Add elements within a vector from left to right.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
///
|
|
/// Starting with the value `y`, add the elements of `x` and accumulate.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_add_ordered<T, U>(x: T, y: U) -> U;
|
|
|
|
/// Add elements within a vector in arbitrary order. May also be re-associated with
|
|
/// unordered additions on the inputs/outputs.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_add_unordered<T, U>(x: T) -> U;
|
|
|
|
/// Multiply elements within a vector from left to right.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
///
|
|
/// Starting with the value `y`, multiply the elements of `x` and accumulate.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_mul_ordered<T, U>(x: T, y: U) -> U;
|
|
|
|
/// Multiply elements within a vector in arbitrary order. May also be re-associated with
|
|
/// unordered additions on the inputs/outputs.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_mul_unordered<T, U>(x: T) -> U;
|
|
|
|
/// Check if all mask values are true.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
///
|
|
/// # Safety
|
|
/// `x` must contain only `0` or `!0`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_all<T>(x: T) -> bool;
|
|
|
|
/// Check if any mask value is true.
|
|
///
|
|
/// `T` must be a vector of integer primitive types.
|
|
///
|
|
/// # Safety
|
|
/// `x` must contain only `0` or `!0`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_any<T>(x: T) -> bool;
|
|
|
|
/// Return the maximum element of a vector.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
///
|
|
/// For floating-point values, uses IEEE-754 `maxNum`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_max<T, U>(x: T) -> U;
|
|
|
|
/// Return the minimum element of a vector.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
///
|
|
/// For floating-point values, uses IEEE-754 `minNum`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_min<T, U>(x: T) -> U;
|
|
|
|
/// Logical "and" all elements together.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_and<T, U>(x: T) -> U;
|
|
|
|
/// Logical "or" all elements together.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_or<T, U>(x: T) -> U;
|
|
|
|
/// Logical "exclusive or" all elements together.
|
|
///
|
|
/// `T` must be a vector of integer or floating-point primitive types.
|
|
///
|
|
/// `U` must be the element type of `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_reduce_xor<T, U>(x: T) -> U;
|
|
|
|
/// Truncate an integer vector to a bitmask.
|
|
///
|
|
/// `T` must be an integer vector.
|
|
///
|
|
/// `U` must be either the smallest unsigned integer with at least as many bits as the length
|
|
/// of `T`, or the smallest array of `u8` with as many bits as the length of `T`.
|
|
///
|
|
/// Each element is truncated to a single bit and packed into the result.
|
|
///
|
|
/// No matter whether the output is an array or an unsigned integer, it is treated as a single
|
|
/// contiguous list of bits. The bitmask is always packed on the least-significant side of the
|
|
/// output, and padded with 0s in the most-significant bits. The order of the bits depends on
|
|
/// endianness:
|
|
///
|
|
/// * On little endian, the least significant bit corresponds to the first vector element.
|
|
/// * On big endian, the least significant bit corresponds to the last vector element.
|
|
///
|
|
/// For example, `[!0, 0, !0, !0]` packs to `0b1101` on little endian and `0b1011` on big
|
|
/// endian.
|
|
///
|
|
/// To consider a larger example, `[!0, 0, 0, 0, 0, 0, 0, 0, !0, !0, 0, 0, 0, 0, !0, 0]` packs
|
|
/// to `[0b00000001, 0b01000011]` or `0b0100001100000001` on little endian, and `[0b10000000,
|
|
/// 0b11000010]` or `0b1000000011000010` on big endian.
|
|
///
|
|
/// # Safety
|
|
/// `x` must contain only `0` and `!0`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_bitmask<T, U>(x: T) -> U;
|
|
|
|
/// Select elements from a mask.
|
|
///
|
|
/// `M` must be an integer vector.
|
|
///
|
|
/// `T` must be a vector with the same number of elements as `M`.
|
|
///
|
|
/// For each element, if the corresponding value in `mask` is `!0`, select the element from
|
|
/// `if_true`. If the corresponding value in `mask` is `0`, select the element from
|
|
/// `if_false`.
|
|
///
|
|
/// # Safety
|
|
/// `mask` must only contain `0` and `!0`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_select<M, T>(mask: M, if_true: T, if_false: T) -> T;
|
|
|
|
/// Select elements from a bitmask.
|
|
///
|
|
/// `M` must be an unsigned integer or array of `u8`, matching `simd_bitmask`.
|
|
///
|
|
/// `T` must be a vector.
|
|
///
|
|
/// For each element, if the bit in `mask` is `1`, select the element from
|
|
/// `if_true`. If the corresponding bit in `mask` is `0`, select the element from
|
|
/// `if_false`.
|
|
///
|
|
/// The bitmask bit order matches `simd_bitmask`.
|
|
///
|
|
/// # Safety
|
|
/// Padding bits must be all zero.
|
|
#[rustc_nounwind]
|
|
pub fn simd_select_bitmask<M, T>(m: M, yes: T, no: T) -> T;
|
|
|
|
/// Elementwise calculates the offset from a pointer vector, potentially wrapping.
|
|
///
|
|
/// `T` must be a vector of pointers.
|
|
///
|
|
/// `U` must be a vector of `isize` or `usize` with the same number of elements as `T`.
|
|
///
|
|
/// Operates as if by `<ptr>::wrapping_offset`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_arith_offset<T, U>(ptr: T, offset: U) -> T;
|
|
|
|
/// Cast a vector of pointers.
|
|
///
|
|
/// `T` and `U` must be vectors of pointers with the same number of elements.
|
|
#[rustc_nounwind]
|
|
pub fn simd_cast_ptr<T, U>(ptr: T) -> U;
|
|
|
|
/// Expose a vector of pointers as a vector of addresses.
|
|
///
|
|
/// `T` must be a vector of pointers.
|
|
///
|
|
/// `U` must be a vector of `usize` with the same length as `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_expose_provenance<T, U>(ptr: T) -> U;
|
|
|
|
/// Create a vector of pointers from a vector of addresses.
|
|
///
|
|
/// `T` must be a vector of `usize`.
|
|
///
|
|
/// `U` must be a vector of pointers, with the same length as `T`.
|
|
#[rustc_nounwind]
|
|
pub fn simd_with_exposed_provenance<T, U>(addr: T) -> U;
|
|
|
|
/// Swap bytes of each element.
|
|
///
|
|
/// `T` must be a vector of integers.
|
|
#[rustc_nounwind]
|
|
pub fn simd_bswap<T>(x: T) -> T;
|
|
|
|
/// Reverse bits of each element.
|
|
///
|
|
/// `T` must be a vector of integers.
|
|
#[rustc_nounwind]
|
|
pub fn simd_bitreverse<T>(x: T) -> T;
|
|
|
|
/// Count the leading zeros of each element.
|
|
///
|
|
/// `T` must be a vector of integers.
|
|
#[rustc_nounwind]
|
|
pub fn simd_ctlz<T>(x: T) -> T;
|
|
|
|
/// Count the number of ones in each element.
|
|
///
|
|
/// `T` must be a vector of integers.
|
|
#[rustc_nounwind]
|
|
#[cfg(not(bootstrap))]
|
|
pub fn simd_ctpop<T>(x: T) -> T;
|
|
|
|
/// Count the trailing zeros of each element.
|
|
///
|
|
/// `T` must be a vector of integers.
|
|
#[rustc_nounwind]
|
|
pub fn simd_cttz<T>(x: T) -> T;
|
|
|
|
/// Round up each element to the next highest integer-valued float.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_ceil<T>(x: T) -> T;
|
|
|
|
/// Round down each element to the next lowest integer-valued float.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_floor<T>(x: T) -> T;
|
|
|
|
/// Round each element to the closest integer-valued float.
|
|
/// Ties are resolved by rounding away from 0.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_round<T>(x: T) -> T;
|
|
|
|
/// Return the integer part of each element as an integer-valued float.
|
|
/// In other words, non-integer values are truncated towards zero.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_trunc<T>(x: T) -> T;
|
|
|
|
/// Takes the square root of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fsqrt<T>(x: T) -> T;
|
|
|
|
/// Computes `(x*y) + z` for each element, but without any intermediate rounding.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fma<T>(x: T, y: T, z: T) -> T;
|
|
|
|
// Computes the sine of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fsin<T>(a: T) -> T;
|
|
|
|
// Computes the cosine of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fcos<T>(a: T) -> T;
|
|
|
|
// Computes the exponential function of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fexp<T>(a: T) -> T;
|
|
|
|
// Computes 2 raised to the power of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_fexp2<T>(a: T) -> T;
|
|
|
|
// Computes the base 10 logarithm of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_flog10<T>(a: T) -> T;
|
|
|
|
// Computes the base 2 logarithm of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_flog2<T>(a: T) -> T;
|
|
|
|
// Computes the natural logarithm of each element.
|
|
///
|
|
/// `T` must be a vector of floats.
|
|
#[rustc_nounwind]
|
|
pub fn simd_flog<T>(a: T) -> T;
|
|
}
|