Trait RPartialOrd 

pub trait RPartialOrd {
    // Required method
    fn r_partial_cmp(&self, other: &Self) -> Option<i32>;

    // Provided method
    #[doc(hidden)]
    unsafe extern "C" fn __RPartialOrd_r_partial_cmp_shim(
        data: *mut c_void,
        argc: i32,
        argv: *const SEXP,
    ) -> SEXP
       where Self: Sized + RPartialOrd + TypedExternal + Send + 'static { ... }
}

Adapter trait for std::cmp::PartialOrd.

Provides partial ordering comparison for R, handling incomparable values. Automatically implemented for any type that implements PartialOrd.

Methods

• r_partial_cmp(&self, other: &Self) (partial_cmp() in R) - Returns Some(-1/0/1) or None

Example

// f64 has partial ordering (NaN is not comparable)
#[derive(PartialOrd, PartialEq, ExternalPtr)]
struct MyFloat(f64);

#[miniextendr]
impl miniextendr_api::adapter_traits::RPartialOrd for MyFloat {}

Required Methods

fn r_partial_cmp(&self, other: &Self) -> Option<i32>

Compare with another value, returning None if incomparable.

Returns:

• Some(-1) if self < other
• Some(0) if self == other
• Some(1) if self > other
• None if values are incomparable (in R, NA)

Provided Methods

#[doc(hidden)]

unsafe extern "C" fn __RPartialOrd_r_partial_cmp_shim( data: *mut c_void, argc: i32, argv: *const SEXP, ) -> SEXP

where Self: Sized + RPartialOrd + TypedExternal + Send + 'static,

Method shim for RPartialOrd::r_partial_cmp.

Converts SEXP arguments, calls the method, and returns SEXP result. Both Rust panics and R longjmps are caught via with_r_unwind_protect.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T: PartialOrd> RPartialOrd for T