polars_core/chunked_array/
float.rs

1use arrow::legacy::kernels::set::set_at_nulls;
2use num_traits::Float;
3use polars_utils::total_ord::{canonical_f32, canonical_f64};
4
5use crate::prelude::arity::unary_elementwise_values;
6use crate::prelude::*;
7
8impl<T> ChunkedArray<T>
9where
10    T: PolarsFloatType,
11    T::Native: Float,
12{
13    pub fn is_nan(&self) -> BooleanChunked {
14        unary_elementwise_values(self, |x| x.is_nan())
15    }
16    pub fn is_not_nan(&self) -> BooleanChunked {
17        unary_elementwise_values(self, |x| !x.is_nan())
18    }
19    pub fn is_finite(&self) -> BooleanChunked {
20        unary_elementwise_values(self, |x| x.is_finite())
21    }
22    pub fn is_infinite(&self) -> BooleanChunked {
23        unary_elementwise_values(self, |x| x.is_infinite())
24    }
25
26    #[must_use]
27    /// Convert missing values to `NaN` values.
28    pub fn none_to_nan(&self) -> Self {
29        let chunks = self
30            .downcast_iter()
31            .map(|arr| set_at_nulls(arr, T::Native::nan()));
32        ChunkedArray::from_chunk_iter(self.name().clone(), chunks)
33    }
34}
35
36pub trait Canonical {
37    fn canonical(self) -> Self;
38}
39
40impl Canonical for f32 {
41    #[inline]
42    fn canonical(self) -> Self {
43        canonical_f32(self)
44    }
45}
46
47impl Canonical for f64 {
48    #[inline]
49    fn canonical(self) -> Self {
50        canonical_f64(self)
51    }
52}
53
54impl<T> ChunkedArray<T>
55where
56    T: PolarsFloatType,
57    T::Native: Float + Canonical,
58{
59    pub fn to_canonical(&self) -> Self {
60        unary_elementwise_values(self, |v| v.canonical())
61    }
62}
polars_core/chunked_array/float.rs

polars_core/chunked_array/
float.rs
