uint64x2
struct uint64x2Available without an import.
A 128-bit SIMD value containing 2 uint64 lanes. Arithmetic operates lane-wise, with integer overflow wrapping within each lane. Lane and WithLane require constant indices; bracket indexing supports checked runtime indices. Comparisons return all-one/all-zero integer masks. Bit reinterpretation involving floating-point lanes canonicalizes NaNs.
Members
Splatmethod
public static fn Splat(uint64 value) : uint64x2Copies one scalar value into every lane.
Zeromethod
public static fn Zero() : uint64x2Returns a vector whose lanes are all zero.
constructorconstructor
public constructor (uint64 l0, uint64 l1)Creates a vector from scalar lanes in ascending index order.
Lanemethod
public fn Lane(int32 index) : uint64Reads a compile-time constant lane index in [0, 2). Invalid or nonconstant indices are rejected; use bracket indexing for runtime indices.
ReduceSummethod
public fn ReduceSum() : uint64Sums every lane into the scalar result. Arithmetic wraps at the scalar result width; narrow lanes are widened before addition.
Eqmethod
public fn Eq(uint64x2 other) : uint64x2Compares corresponding lanes for equal, returning all-one bits for true and all-zero bits for false. Ordered comparisons use the lane type's signedness.
Nemethod
public fn Ne(uint64x2 other) : uint64x2Compares corresponding lanes for unequal, returning all-one bits for true and all-zero bits for false. Ordered comparisons use the lane type's signedness.
AnyTruemethod
public fn AnyTrue() : boolTests whether any lane has a nonzero bit pattern.
AllTruemethod
public fn AllTrue() : boolTests whether every lane has a nonzero bit pattern.
Bitmaskmethod
public fn Bitmask() : int32Packs each lane's most significant bit into the corresponding bit of an integer; lane zero becomes bit zero.
WithLanemethod
public fn WithLane(int32 index, uint64 value) : uint64x2Returns a copy with one lane replaced. The index must be a compile-time constant in [0, 2); use bracket assignment for runtime indices.
Shufflemethod
public fn Shuffle(int32 l0, int32 l1) : uint64x2Returns lanes selected in argument order. Every index must be a compile-time constant in [0, 2); repeats are allowed.
Selectmethod
public fn Select(uint64x2 a, uint64x2 b) : uint64x2Selects bits from a where this mask has one bits and from b where it has zero bits. Comparison masks select entire lanes; arbitrary masks can mix bits within a lane.
AsInt8x16method
public fn AsInt8x16() : int8x16Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsUint8x16method
public fn AsUint8x16() : uint8x16Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsInt16x8method
public fn AsInt16x8() : int16x8Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsUint16x8method
public fn AsUint16x8() : uint16x8Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsInt32x4method
public fn AsInt32x4() : int32x4Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsUint32x4method
public fn AsUint32x4() : uint32x4Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsInt64x2method
public fn AsInt64x2() : int64x2Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsFloat32x4method
public fn AsFloat32x4() : float32x4Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
AsFloat64x2method
public fn AsFloat64x2() : float64x2Reinterprets this 128-bit value with the destination lane shape rather than converting numerically. Floating-point NaN lanes are canonicalized on either side of the reinterpretation; NaN payload bits are not preserved.
Loadmethod
public static fn Load(Span<uint8> data, int32 byteOffset) : uint64x2Reads 16 bytes starting at byteOffset as this lane type. The complete range must fit the span or the operation panics. No alignment requirement is imposed.
LoadAlignedmethod
public static fn LoadAligned(Span<uint8> data, int32 byteOffset) : uint64x2Reads 16 bytes with the same bounds checks and behavior as Load. Alignment is a hint; unaligned addresses are accepted.
Storemethod
public fn Store(Span<uint8> data, int32 byteOffset) : voidWrites all 16 bytes at byteOffset. The complete range must fit the span or the operation panics. Does not resize or retain the span.
LoadElemsmethod
public static fn LoadElems(Span<uint64> data, int32 elemIndex) : uint64x2Reads 2 consecutive elements starting at elemIndex. The whole element range must fit or the operation panics; indices count elements, not bytes.
StoreElemsmethod
public fn StoreElems(Span<uint64> data, int32 elemIndex) : voidWrites 2 consecutive elements starting at elemIndex. The whole element range must fit or the operation panics; indices count elements, not bytes.
ToStringmethod
public fn ToString() : stringProvided by the compiler.
ToStringBuffermethod
public fn ToStringBuffer(StringBuilder builder) : int32Provided by the compiler.