Struct U64x4

pub struct U64x4(/* private fields */);

[u64; 4] as a vector.

Implementations

impl U64x4

pub const fn from_array(arr: [u64; 4]) -> Self

Create a vector from an array.

Unlike the From trait function, the from_array function is const.

Example

const MY_EXTREMELY_FUN_VALUE: U64x4 = U64x4::from_array([0, 1, 2, 3]);
for (i, value) in MY_EXTREMELY_FUN_VALUE.as_array().iter().copied().enumerate() {
    assert_eq!(i as u64, value);
}

Trait Implementations

impl Add for U64x4

fn add(self, rhs: U64x4) -> U64x4

Perform a pairwise wrapping_add

Scalar Equivalent

U64x4::from([
    self.as_array()[0].wrapping_add(rhs.as_array()[0]),
    self.as_array()[1].wrapping_add(rhs.as_array()[1]),
    self.as_array()[2].wrapping_add(rhs.as_array()[2]),
    self.as_array()[3].wrapping_add(rhs.as_array()[3]),
])

AVX2 Intrinsics Used

• _mm256_add_epi64
  • VPADDQ ymm, ymm, ymm

Neon Intrinsics Used

• vaddq_u64
  • This intrinsic compiles to the following instructions:
    • ADD Vd.2D,Vn.2D,Vm.2D

type Output = U64x4

The resulting type after applying the + operator.

impl AddAssign for U64x4

fn add_assign(&mut self, other: U64x4)

Performs the += operation.

impl AsMut<[u64]> for U64x4

fn as_mut(&mut self) -> &mut [u64]

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u64]> for U64x4

fn as_ref(&self) -> &[u64]

Converts this type into a shared reference of the (usually inferred) input type.

impl BitAnd for U64x4

fn bitand(self, rhs: U64x4) -> U64x4

Perform a pairwise bitwise and

Scalar Equivalent

U64x4::from([
    self.as_array()[0] & rhs.as_array()[0],
    self.as_array()[1] & rhs.as_array()[1],
    self.as_array()[2] & rhs.as_array()[2],
    self.as_array()[3] & rhs.as_array()[3],
])

AVX2 Intrinsics Used

• _mm256_and_si256
  • VPAND ymm, ymm, ymm

Neon Intrinsics Used

• vandq_u64
  • This intrinsic compiles to the following instructions:
    • AND Vd.16B,Vn.16B,Vm.16B

type Output = U64x4

The resulting type after applying the & operator.

impl BitAndAssign for U64x4

fn bitand_assign(&mut self, other: U64x4)

Performs the &= operation.

impl BitOr for U64x4

fn bitor(self, rhs: U64x4) -> U64x4

Perform a pairwise bitwise or

Scalar Equivalent

U64x4::from([
    self.as_array()[0] | rhs.as_array()[0],
    self.as_array()[1] | rhs.as_array()[1],
    self.as_array()[2] | rhs.as_array()[2],
    self.as_array()[3] | rhs.as_array()[3],
])

AVX2 Intrinsics Used

• _mm256_or_si256
  • VPOR ymm, ymm, ymm

Neon Intrinsics Used

• vorrq_u64
  • This intrinsic compiles to the following instructions:
    • ORR Vd.16B,Vn.16B,Vm.16B

type Output = U64x4

The resulting type after applying the | operator.

impl BitOrAssign for U64x4

fn bitor_assign(&mut self, other: U64x4)

Performs the |= operation.

impl BitXor for U64x4

fn bitxor(self, rhs: U64x4) -> U64x4

Perform a pairwise bitwise xor

Scalar Equivalent

U64x4::from([
    self.as_array()[0] ^ rhs.as_array()[0],
    self.as_array()[1] ^ rhs.as_array()[1],
    self.as_array()[2] ^ rhs.as_array()[2],
    self.as_array()[3] ^ rhs.as_array()[3],
])

AVX2 Intrinsics Used

• _mm256_xor_si256
  • VPXOR ymm, ymm, ymm

Neon Intrinsics Used

• veorq_u64
  • This intrinsic compiles to the following instructions:
    • EOR Vd.16B,Vn.16B,Vm.16B

type Output = U64x4

The resulting type after applying the ^ operator.

impl BitXorAssign for U64x4

fn bitxor_assign(&mut self, other: U64x4)

Performs the ^= operation.

impl Clone for U64x4

fn clone(&self) -> U64x4

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConditionallySelectable for U64x4

fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self

Select a or b according to choice.

fn conditional_assign(&mut self, other: &Self, choice: Choice)

Conditionally assign other to self, according to choice.

fn conditional_swap(a: &mut Self, b: &mut Self, choice: Choice)

Conditionally swap self and other if choice == 1; otherwise, reassign both unto themselves.

impl ConstantTimeEq for U64x4

fn ct_eq(&self, other: &Self) -> Choice

Determine if two items are equal.

fn ct_ne(&self, other: &Self) -> Choice

Determine if two items are NOT equal.

impl Debug for U64x4

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for U64x4

fn default() -> Self

The zero vector.

impl<'de> Deserialize<'de> for U64x4

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Distribution<U64x4> for Standard

fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> U64x4

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>

where R: Rng, Self: Sized,

Create an iterator that generates random values of T, using rng as the source of randomness.

fn map<F, S>(self, func: F) -> DistMap<Self, F, T, S>

where F: Fn(T) -> S, Self: Sized,

Create a distribution of values of ‘S’ by mapping the output of Self through the closure F

impl ExtendingCast<U16x8> for U64x4

fn extending_cast_from(vector: U16x8) -> U64x4

Scalar Equivalent:

U64x4::from([
        u64::from(vector.as_array()[0]),
        u64::from(vector.as_array()[1]),
        u64::from(vector.as_array()[2]),
        u64::from(vector.as_array()[3]),
])

Avx2

• _mm256_cvtepu16_epi64

  • VPMOVZXWQ ymm, xmm

impl ExtendingCast<U32x4> for U64x4

fn extending_cast_from(vector: U32x4) -> U64x4

Scalar Equivalent:

U64x4::from([
        u64::from(vector.as_array()[0]),
        u64::from(vector.as_array()[1]),
        u64::from(vector.as_array()[2]),
        u64::from(vector.as_array()[3]),
])

Avx2

• _mm256_cvtepu32_epi64

  • VPMOVZXDQ ymm, xmm

impl ExtendingCast<U8x16> for U64x4

fn extending_cast_from(vector: U8x16) -> U64x4

Scalar Equivalent:

U64x4::from([
        u64::from(vector.as_array()[0]),
        u64::from(vector.as_array()[1]),
        u64::from(vector.as_array()[2]),
        u64::from(vector.as_array()[3]),
])

Avx2

• _mm256_cvtepu8_epi64

  • VPMOVZXBQ ymm, xmm

impl From<[U64x2; 2]> for U64x4

fn from(vectors: [U64x2; 2]) -> U64x4

Scalar Equivalent:

let mut out = [0; 4];
out[0..2].copy_from_slice(&vectors[0].as_array());
out[2..].copy_from_slice(&vectors[1].as_array());
U64x4::from(out)

Avx2

• _mm256_set_m128i

  • VINSERTF128 ymm, ymm, xmm, imm8

impl From<[u64; 4]> for U64x4

fn from(arr: [u64; 4]) -> U64x4

Converts to this type from the input type.

impl From<I16x16> for U64x4

fn from(x: I16x16) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of I16x16 as little endian bits of U64x4.

impl From<I32x8> for U64x4

fn from(x: I32x8) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of I32x8 as little endian bits of U64x4.

impl From<I64x4> for U64x4

fn from(x: I64x4) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of I64x4 as little endian bits of U64x4.

impl From<I8x32> for U64x4

fn from(x: I8x32) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of I8x32 as little endian bits of U64x4.

impl From<U16x16> for U64x4

fn from(x: U16x16) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of U16x16 as little endian bits of U64x4.

impl From<U32x4> for U64x4

fn from(vector: U32x4) -> U64x4

Scalar Equivalent:

U64x4::from([
        u64::from(vector.as_array()[0]),
        u64::from(vector.as_array()[1]),
        u64::from(vector.as_array()[2]),
        u64::from(vector.as_array()[3]),
])

Avx2

• _mm256_cvtepu32_epi64

  • VPMOVZXDQ ymm, xmm

impl From<U32x8> for U64x4

fn from(x: U32x8) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of U32x8 as little endian bits of U64x4.

impl From<U64x2> for U64x4

fn from(vector: U64x2) -> U64x4

NOTE: this will zero the upper bits of the destination. Other intrinsics are more effcient, but leave the upper bits undefined. At present, these more effcient intrinsics are not exposed.

Scalar Equivalent:

let mut out = [0; 4];
out[0..2].copy_from_slice(&vector.as_array());
U64x4::from(out)

Avx2

• _mm256_zextsi128_si256

impl From<U64x4> for [U64x2; 2]

fn from(vector: U64x4) -> [U64x2; 2]

Scalar Equivalent:

let mut lo = [0; 2];
let mut hi = [0; 2];
lo.copy_from_slice(&vector.as_array()[0..2]);
hi.copy_from_slice(&vector.as_array()[2..]);
[U64x2::from(lo), U64x2::from(hi)]

Avx2

• _mm256_extracti128_si256

  • VEXTRACTI128 xmm, ymm, imm8

impl From<U64x4> for [u64; 4]

fn from(arr: U64x4) -> [u64; 4]

Converts to this type from the input type.

impl From<U64x4> for I16x16

fn from(x: U64x4) -> I16x16

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of I16x16.

impl From<U64x4> for I32x8

fn from(x: U64x4) -> I32x8

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of I32x8.

impl From<U64x4> for I64x4

fn from(x: U64x4) -> I64x4

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of I64x4.

impl From<U64x4> for I8x32

fn from(x: U64x4) -> I8x32

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of I8x32.

impl From<U64x4> for U16x16

fn from(x: U64x4) -> U16x16

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of U16x16.

impl From<U64x4> for U32x8

fn from(x: U64x4) -> U32x8

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of U32x8.

impl From<U64x4> for U8x32

fn from(x: U64x4) -> U8x32

This cast is 100% free. It reinterprets the little-endinan bits of U64x4 as little endian bits of U8x32.

impl From<U8x32> for U64x4

fn from(x: U8x32) -> U64x4

This cast is 100% free. It reinterprets the little-endinan bits of U8x32 as little endian bits of U64x4.

impl Hash for U64x4

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for U64x4

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for U64x4

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Shl<u64> for U64x4

fn shl(self, amount: u64) -> U64x4

Scalar Equivalent:

if amount >= 64 {
    U64x4::ZERO
} else {
    U64x4::from([
        self.as_array()[0] << amount,
        self.as_array()[1] << amount,
        self.as_array()[2] << amount,
        self.as_array()[3] << amount,
    ])
}

Avx2

• _mm256_sll_epi64

  • VPSLLQ ymm, ymm, xmm

• _mm_set_epi64x

  Instruction sequence.

type Output = U64x4

The resulting type after applying the << operator.

impl Shl for U64x4

fn shl(self, amount: U64x4) -> U64x4

Scalar Equivalent:

let mut out = self.as_array();
for (x, amm) in out.iter_mut().zip(amount.as_array().iter().copied()) {
    *x = if (0..64).contains(&amm) {
        *x << amm
    }  else {
        0
    };
}
U64x4::from(out)

Avx2

• _mm256_sllv_epi64

  • VPSLLVQ ymm, ymm, ymm

type Output = U64x4

The resulting type after applying the << operator.

impl ShlAssign<u64> for U64x4

fn shl_assign(&mut self, amount: u64)

Performs the <<= operation.

impl ShlAssign for U64x4

fn shl_assign(&mut self, amount: U64x4)

Performs the <<= operation.

impl Shr<u64> for U64x4

fn shr(self, amount: u64) -> U64x4

Scalar Equivalent:

if amount >= 64 {
    U64x4::ZERO
} else {
    U64x4::from([
        self.as_array()[0] >> amount,
        self.as_array()[1] >> amount,
        self.as_array()[2] >> amount,
        self.as_array()[3] >> amount,
    ])
}

Avx2

• _mm256_srl_epi64

  • VPSRLQ ymm, ymm, xmm

• _mm_set_epi64x

  Instruction sequence.

type Output = U64x4

The resulting type after applying the >> operator.

impl Shr for U64x4

fn shr(self, amount: U64x4) -> U64x4

Scalar Equivalent:

let mut out = self.as_array();
for (x, amm) in out.iter_mut().zip(amount.as_array().iter().copied()) {
    *x = if (0..64).contains(&amm) {
        *x >> amm
    }  else {
        0
    };
}
U64x4::from(out)

Avx2

• _mm256_srlv_epi64

  • VPSRLVQ ymm, ymm, ymm

type Output = U64x4

The resulting type after applying the >> operator.

impl ShrAssign<u64> for U64x4

fn shr_assign(&mut self, amount: u64)

Performs the >>= operation.

impl ShrAssign for U64x4

fn shr_assign(&mut self, amount: U64x4)

Performs the >>= operation.

impl SimdBase for U64x4

fn is_zero(&self) -> bool

Scalar Equivalent:

self.as_array().iter().all(|x| *x == 0)

Avx2

• _mm256_testz_si256

  • VPTEST ymm, ymm

fn set_lo(scalar: u64) -> U64x4

Scalar Equivalent:

let mut out = [0; 4];
out[0] = scalar;
U64x4::from(out)

Avx2

• _mm256_set_epi64x

  Instruction sequence.

fn extract<const I: usize>(&self) -> u64

Scalar Equivalent:

self.as_array()[I]

Avx2

• _mm256_extract_epi64

  Instruction sequence.

fn broadcast(scalar: u64) -> U64x4

Scalar Equivalent:

U64x4::from([scalar; 4])

Avx2

• _mm256_set1_epi64x

  Instruction sequence.

fn broadcast_lo(vector: U64x2) -> U64x4

Scalar Equivalent:

U64x4::from([vector.as_array()[0]; 4])

Avx2

• _mm256_broadcastq_epi64

  • VPBROADCASTQ ymm, xmm

fn cmp_eq(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    if self.as_array()[0] == other.as_array()[0] {  u64::MAX  } else { 0 },
    if self.as_array()[1] == other.as_array()[1] {  u64::MAX  } else { 0 },
    if self.as_array()[2] == other.as_array()[2] {  u64::MAX  } else { 0 },
    if self.as_array()[3] == other.as_array()[3] {  u64::MAX  } else { 0 },
])

Avx2

• _mm256_cmpeq_epi64

  • VPCMPEQQ ymm, ymm, ymm

fn and_not(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    self.as_array()[0] & (!other.as_array()[0]),
    self.as_array()[1] & (!other.as_array()[1]),
    self.as_array()[2] & (!other.as_array()[2]),
    self.as_array()[3] & (!other.as_array()[3]),
])

Avx2

• _mm256_andnot_si256

  • VPANDN ymm, ymm, ymm

fn cmp_gt(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    if self.as_array()[0] > other.as_array()[0] {  u64::MAX  } else { 0 },
    if self.as_array()[1] > other.as_array()[1] {  u64::MAX  } else { 0 },
    if self.as_array()[2] > other.as_array()[2] {  u64::MAX  } else { 0 },
    if self.as_array()[3] > other.as_array()[3] {  u64::MAX  } else { 0 },
])

Avx2

NOTE: this implementation uses an efficient vector polyfill, though this operation is not natively supported.

// Based on https://stackoverflow.com/a/33173643 and https://git.io/JmghK
let sign_bit = Self::broadcast(1 << 63);
Self::from(I64x4::from(*self ^ sign_bit).cmp_gt(
    I64x4::from(other ^ sign_bit)
))

fn shift_left<const BITS: usize>(&self) -> U64x4

Scalar Equivalent:

let mut out = self.as_array();
for x in out.iter_mut() {
    *x <<= BITS;
}
U64x4::from(out)

Avx2

• _mm256_slli_epi64

  • VPSLLQ ymm, ymm, imm8

fn shift_right<const BITS: usize>(&self) -> U64x4

Scalar Equivalent:

let mut out = self.as_array();
for x in out.iter_mut() {
    *x >>= BITS;
}
U64x4::from(out)

Avx2

• _mm256_srli_epi64

  • VPSRLQ ymm, ymm, imm8

fn unpack_lo(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    // Lane# 0
    self.as_array()[0],
    other.as_array()[0],
    // Lane# 1
    self.as_array()[2],
    other.as_array()[2],
])

Avx2

• _mm256_unpacklo_epi64

  • VPUNPCKLQDQ ymm, ymm, ymm

fn unpack_hi(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    // Lane# 0
    self.as_array()[1],
    other.as_array()[1],
    // Lane# 1
    self.as_array()[3],
    other.as_array()[3],
])

Avx2

• _mm256_unpackhi_epi64

  • VPUNPCKHQDQ ymm, ymm, ymm

fn max(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    self.as_array()[0].max(other.as_array()[0]),
    self.as_array()[1].max(other.as_array()[1]),
    self.as_array()[2].max(other.as_array()[2]),
    self.as_array()[3].max(other.as_array()[3]),
])

Avx2

WARNING: this implementation is a polyfill which executes the scalar implemenation.

fn min(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    self.as_array()[0].min(other.as_array()[0]),
    self.as_array()[1].min(other.as_array()[1]),
    self.as_array()[2].min(other.as_array()[2]),
    self.as_array()[3].min(other.as_array()[3]),
])

Avx2

WARNING: this implementation is a polyfill which executes the scalar implemenation.

const LANES: usize = 4usize

The number of elements of this vector.

const ZERO: Self

A vector where every element is zero.

type Scalar = u64

The scalar that this value holds.

type Array = [u64; 4]

The equivalent array type of this vector.

type Signed = I64x4

The signed version of this vector.

type Unsigned = U64x4

The unsigned version of this vector.

type BroadcastLoInput = U64x2

A vector of [Self::Scalar; 128 / (8 * std::mem::size_of::<Self::Scalar>())]

fn as_array(&self) -> Self::Array

Convert the vector to an array.

impl SimdBase4x for U64x4

fn blend<const B3: bool, const B2: bool, const B1: bool, const B0: bool>( &self, if_true: U64x4, ) -> U64x4

Scalar Equivalent:

U64x4::from([
        (if B0 { if_true } else { *self }).as_array()[0],
        (if B1 { if_true } else { *self }).as_array()[1],
        (if B2 { if_true } else { *self }).as_array()[2],
        (if B3 { if_true } else { *self }).as_array()[3],
])

Avx2

• _mm256_blend_epi32

  • VPBLENDD ymm, ymm, ymm, imm8

impl SimdBase4x64 for U64x4

fn shuffle<const I3: usize, const I2: usize, const I1: usize, const I0: usize>( &self, ) -> U64x4

Scalar Equivalent:

U64x4::from([
    self.as_array()[I0],
    self.as_array()[I1],
    self.as_array()[I2],
    self.as_array()[I3],
])

Avx2

• _mm256_permute4x64_epi64

  • VPERMQ ymm, ymm, imm8

impl SimdBase64 for U64x4

fn mul_lo(&self, other: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    ((self.as_array()[0] as u32) as u64) * ((other.as_array()[0] as u32) as u64),
    ((self.as_array()[1] as u32) as u64) * ((other.as_array()[1] as u32) as u64),
    ((self.as_array()[2] as u32) as u64) * ((other.as_array()[2] as u32) as u64),
    ((self.as_array()[3] as u32) as u64) * ((other.as_array()[3] as u32) as u64),
])

Avx2

• _mm256_mul_epu32

  • VPMULUDQ ymm, ymm, ymm

impl SimdBaseGatherable<I32x4> for U64x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const u64, indices: I32x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i32gather_epi64

  • VPGATHERDQ ymm, vm32x, ymm

unsafe fn gather_masked( base: *const u64, indices: I32x4, mask: U64x4, src: U64x4, ) -> U64x4

Scalar Equivalent:

U64x4::from([
    if (mask.as_array()[0] >> 63) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if (mask.as_array()[1] >> 63) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if (mask.as_array()[2] >> 63) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if (mask.as_array()[3] >> 63) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i32gather_epi64

  • VPGATHERDQ ymm, vm32x, ymm

impl SimdBaseGatherable<I64x4> for U64x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const u64, indices: I64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

unsafe fn gather_masked( base: *const u64, indices: I64x4, mask: U64x4, src: U64x4, ) -> U64x4

Scalar Equivalent:

U64x4::from([
    if (mask.as_array()[0] >> 63) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if (mask.as_array()[1] >> 63) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if (mask.as_array()[2] >> 63) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if (mask.as_array()[3] >> 63) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

impl SimdBaseGatherable<U64x4> for I32x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const i32, indices: U64x4) -> I32x4

Scalar Equivalent:

I32x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i64gather_epi32

  • VPGATHERQD xmm, vm64y, xmm

unsafe fn gather_masked( base: *const i32, indices: U64x4, mask: I32x4, src: I32x4, ) -> I32x4

Scalar Equivalent:

I32x4::from([
    if ((mask.as_array()[0] as u32) >> 31) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if ((mask.as_array()[1] as u32) >> 31) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if ((mask.as_array()[2] as u32) >> 31) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if ((mask.as_array()[3] as u32) >> 31) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i64gather_epi32

  • VPGATHERQD xmm, vm64y, xmm

impl SimdBaseGatherable<U64x4> for I64x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const i64, indices: U64x4) -> I64x4

Scalar Equivalent:

I64x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

unsafe fn gather_masked( base: *const i64, indices: U64x4, mask: I64x4, src: I64x4, ) -> I64x4

Scalar Equivalent:

I64x4::from([
    if ((mask.as_array()[0] as u64) >> 63) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if ((mask.as_array()[1] as u64) >> 63) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if ((mask.as_array()[2] as u64) >> 63) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if ((mask.as_array()[3] as u64) >> 63) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

impl SimdBaseGatherable<U64x4> for U32x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const u32, indices: U64x4) -> U32x4

Scalar Equivalent:

U32x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i64gather_epi32

  • VPGATHERQD xmm, vm64y, xmm

unsafe fn gather_masked( base: *const u32, indices: U64x4, mask: U32x4, src: U32x4, ) -> U32x4

Scalar Equivalent:

U32x4::from([
    if (mask.as_array()[0] >> 31) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if (mask.as_array()[1] >> 31) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if (mask.as_array()[2] >> 31) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if (mask.as_array()[3] >> 31) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i64gather_epi32

  • VPGATHERQD xmm, vm64y, xmm

impl SimdBaseGatherable<U64x4> for U64x4

Safety

base does not need to be aligned. Forall i, base + indices[i] must meet the safety requirements of std::ptr::read_unaligned

unsafe fn gather(base: *const u64, indices: U64x4) -> U64x4

Scalar Equivalent:

U64x4::from([
    base.offset(indices.as_array()[0] as isize).read_unaligned(),
    base.offset(indices.as_array()[1] as isize).read_unaligned(),
    base.offset(indices.as_array()[2] as isize).read_unaligned(),
    base.offset(indices.as_array()[3] as isize).read_unaligned(),
])

Avx2

• _mm256_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

unsafe fn gather_masked( base: *const u64, indices: U64x4, mask: U64x4, src: U64x4, ) -> U64x4

Scalar Equivalent:

U64x4::from([
    if (mask.as_array()[0] >> 63) == 1 {
        base.offset(indices.as_array()[0] as isize).read_unaligned()
    } else {
        src.as_array()[0]
    },
    if (mask.as_array()[1] >> 63) == 1 {
        base.offset(indices.as_array()[1] as isize).read_unaligned()
    } else {
        src.as_array()[1]
    },
    if (mask.as_array()[2] >> 63) == 1 {
        base.offset(indices.as_array()[2] as isize).read_unaligned()
    } else {
        src.as_array()[2]
    },
    if (mask.as_array()[3] >> 63) == 1 {
        base.offset(indices.as_array()[3] as isize).read_unaligned()
    } else {
        src.as_array()[3]
    },
])

Avx2

• _mm256_mask_i64gather_epi64

  • VPGATHERQQ ymm, vm64x, ymm

impl Sub for U64x4

fn sub(self, rhs: U64x4) -> U64x4

Perform a pairwise wrapping_sub

Scalar Equivalent

U64x4::from([
    self.as_array()[0].wrapping_sub(rhs.as_array()[0]),
    self.as_array()[1].wrapping_sub(rhs.as_array()[1]),
    self.as_array()[2].wrapping_sub(rhs.as_array()[2]),
    self.as_array()[3].wrapping_sub(rhs.as_array()[3]),
])

AVX2 Intrinsics Used

• _mm256_sub_epi64
  • VPSUBQ ymm, ymm, ymm

Neon Intrinsics Used

• vsubq_u64
  • This intrinsic compiles to the following instructions:
    • SUB Vd.2D,Vn.2D,Vm.2D

type Output = U64x4

The resulting type after applying the - operator.

impl SubAssign for U64x4

fn sub_assign(&mut self, other: U64x4)

Performs the -= operation.

impl Zeroable for U64x4

fn zeroed() -> Self

Calls zeroed.

impl Copy for U64x4

impl Eq for U64x4

impl Pod for U64x4