arrow2 0.18.0

Unofficial implementation of Apache Arrow spec in safe Rust
Documentation 
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use std::convert::TryInto;
use std::simd::{SimdPartialEq, SimdPartialOrd, ToBitMask};

use crate::types::simd::*;
use crate::types::{days_ms, f16, i256, months_days_ns};

use super::*;

macro_rules! simd8 {
    ($type:ty, $md:ty) => {
        impl Simd8 for $type {
            type Simd = $md;
        }

        impl Simd8Lanes<$type> for $md {
            #[inline]
            fn from_chunk(v: &[$type]) -> Self {
                <$md>::from_slice(v)
            }

            #[inline]
            fn from_incomplete_chunk(v: &[$type], remaining: $type) -> Self {
                let mut a = [remaining; 8];
                a.iter_mut().zip(v.iter()).for_each(|(a, b)| *a = *b);
                Self::from_array(a)
            }
        }

        impl Simd8PartialEq for $md {
            #[inline]
            fn eq(self, other: Self) -> u8 {
                self.simd_eq(other).to_bitmask()
            }

            #[inline]
            fn neq(self, other: Self) -> u8 {
                self.simd_ne(other).to_bitmask()
            }
        }

        impl Simd8PartialOrd for $md {
            #[inline]
            fn lt_eq(self, other: Self) -> u8 {
                self.simd_le(other).to_bitmask()
            }

            #[inline]
            fn lt(self, other: Self) -> u8 {
                self.simd_lt(other).to_bitmask()
            }

            #[inline]
            fn gt_eq(self, other: Self) -> u8 {
                self.simd_ge(other).to_bitmask()
            }

            #[inline]
            fn gt(self, other: Self) -> u8 {
                self.simd_gt(other).to_bitmask()
            }
        }
    };
}

simd8!(u8, u8x8);
simd8!(u16, u16x8);
simd8!(u32, u32x8);
simd8!(u64, u64x8);
simd8!(i8, i8x8);
simd8!(i16, i16x8);
simd8!(i32, i32x8);
simd8!(i64, i64x8);
simd8_native_all!(i128);
simd8_native_all!(i256);
simd8_native!(f16);
simd8_native_partial_eq!(f16);
simd8!(f32, f32x8);
simd8!(f64, f64x8);
simd8_native!(days_ms);
simd8_native_partial_eq!(days_ms);
simd8_native!(months_days_ns);
simd8_native_partial_eq!(months_days_ns);