faster 0.5.2

Explicit SIMD for humans
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// This file is part of faster, the SIMD library for humans.
// Copyright 2017 Adam Niederer <adam.niederer@gmail.com>

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

// THIS FILE IS MACHINE GENERATED.

// See vec_patterns_gen.py for more information.

#![allow(unused_imports)]

use crate::arch::current::vecs::*;
use crate::core::mem::transmute;
use crate::vecs::*;



const PART_MASK: [u8; 128] = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                              0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF];

impl Pattern for u8x16 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            3 => Self::new(hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            4 => Self::new(hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            5 => Self::new(hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            6 => Self::new(hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            7 => Self::new(hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            8 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo),
            9 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo),
            10 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo),
            11 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo),
            12 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo),
            13 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo),
            14 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo),
            15 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo),
            16 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFu8) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x00u8) })
            }
}

impl Pattern for i8x16 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            3 => Self::new(hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            4 => Self::new(hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            5 => Self::new(hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            6 => Self::new(hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            7 => Self::new(hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo, lo),
            8 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo, lo),
            9 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo, lo),
            10 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo, lo),
            11 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo, lo),
            12 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo, lo),
            13 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo, lo),
            14 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo, lo),
            15 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, lo),
            16 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFu8) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x00u8) })
            }
}

impl Pattern for u16x8 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, hi, hi, lo, lo, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo, hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo, lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo, lo, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo, lo, lo, lo, lo),
            3 => Self::new(hi, hi, hi, lo, lo, lo, lo, lo),
            4 => Self::new(hi, hi, hi, hi, lo, lo, lo, lo),
            5 => Self::new(hi, hi, hi, hi, hi, lo, lo, lo),
            6 => Self::new(hi, hi, hi, hi, hi, hi, lo, lo),
            7 => Self::new(hi, hi, hi, hi, hi, hi, hi, lo),
            8 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFu16) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x0000u16) })
            }
}

impl Pattern for i16x8 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, hi, hi, lo, lo, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo, hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo, lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo, lo, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo, lo, lo, lo, lo),
            3 => Self::new(hi, hi, hi, lo, lo, lo, lo, lo),
            4 => Self::new(hi, hi, hi, hi, lo, lo, lo, lo),
            5 => Self::new(hi, hi, hi, hi, hi, lo, lo, lo),
            6 => Self::new(hi, hi, hi, hi, hi, hi, lo, lo),
            7 => Self::new(hi, hi, hi, hi, hi, hi, hi, lo),
            8 => Self::new(hi, hi, hi, hi, hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFu16) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x0000u16) })
            }
}

impl Pattern for u32x4 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo),
            3 => Self::new(hi, hi, hi, lo),
            4 => Self::new(hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFu32) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x00000000u32) })
            }
}

impl Pattern for i32x4 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo),
            3 => Self::new(hi, hi, hi, lo),
            4 => Self::new(hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFu32) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x00000000u32) })
            }
}

impl Pattern for f32x4 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, hi, lo, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo, hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo, lo, lo),
            1 => Self::new(hi, lo, lo, lo),
            2 => Self::new(hi, hi, lo, lo),
            3 => Self::new(hi, hi, hi, lo),
            4 => Self::new(hi, hi, hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFu32) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x00000000u32) })
            }
}

impl Pattern for u64x2 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo),
            1 => Self::new(hi, lo),
            2 => Self::new(hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFFFFFFFFFu64) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x0000000000000000u64) })
            }
}

impl Pattern for i64x2 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo),
            1 => Self::new(hi, lo),
            2 => Self::new(hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFFFFFFFFFu64) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x0000000000000000u64) })
            }
}

impl Pattern for f64x2 {
    #[inline(always)]
    fn halfs(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

    #[inline(always)]
    fn interleave(hi: Self::Scalar, lo: Self::Scalar) -> Self {
        Self::new(hi, lo)
    }

            #[inline(always)]
            fn partition_mask(off: usize) -> Self {
                debug_assert!(off <= Self::WIDTH);
                debug_assert!(off * Self::Scalar::SIZE <= 64);
                Self::load(unsafe { transmute(&PART_MASK[..]) }, 64 / Self::Scalar::SIZE - off)
            }

            #[inline(always)]
            #[cfg(target_feature = "__undefined")]
            fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
                optimized!();
                unsafe { transmute(__undefined(transmute(Self::splat(hi)), transmute(Self::splat(lo)), transmute(Self::partition_mask(off)))) }
            }
            
    #[inline(always)]
    #[cfg(not(target_feature = "__undefined"))]
    fn partition(hi: Self::Scalar, lo: Self::Scalar, off: usize) -> Self {
        assert!(off <= Self::WIDTH);
        fallback!();
        match off {
            0 => Self::new(lo, lo),
            1 => Self::new(hi, lo),
            2 => Self::new(hi, hi),
            _ => unreachable!()
        }
    }

            /// Return a vector made entirely of ones.
            #[inline(always)]
            fn ones() -> Self {
                Self::splat(unsafe { transmute(0xFFFFFFFFFFFFFFFFu64) })
            }

            /// Return a vector made entirely of zeroes.
            #[inline(always)]
            fn zeroes() -> Self {
                Self::splat(unsafe { transmute(0x0000000000000000u64) })
            }
}