marrow 0.2.6

Minimalist Arrow interop
Documentation 
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//! Specialized element types of arrays

/// Represent a calendar interval as days and milliseconds
#[derive(Debug, PartialEq, Clone, Copy, bytemuck::AnyBitPattern, bytemuck::NoUninit)]
#[repr(C)]
pub struct DayTimeInterval {
    /// The number of days in the interval
    pub days: i32,
    /// The number of milliseconds in the interval
    pub milliseconds: i32,
}

/// Represent a calendar interval as months, days and nanoseconds
#[derive(Debug, PartialEq, Clone, Copy, bytemuck::AnyBitPattern, bytemuck::NoUninit)]
#[repr(C)]
pub struct MonthDayNanoInterval {
    /// The number of months in the interval
    pub months: i32,
    /// The number of days in the interval
    pub days: i32,
    /// The number of nanoseconds in the interval
    pub nanoseconds: i64,
}

#[test]
fn interval_sizes() {
    assert_eq!(
        std::mem::size_of::<DayTimeInterval>(),
        std::mem::size_of::<i64>()
    );
    assert_eq!(
        std::mem::size_of::<MonthDayNanoInterval>(),
        std::mem::size_of::<i128>()
    );
}