polars_core/frame/column/
arithmetic.rs

1use num_traits::{Num, NumCast};
2use polars_error::PolarsResult;
3
4use super::{Column, ScalarColumn, Series};
5
6fn num_op_with_broadcast<T: Num + NumCast, F: Fn(&Series, T) -> Series>(
7    c: &'_ Column,
8    n: T,
9    op: F,
10) -> Column {
11    match c {
12        Column::Series(s) => op(s, n).into(),
13        Column::Scalar(s) => {
14            ScalarColumn::from_single_value_series(op(&s.as_single_value_series(), n), s.len())
15                .into()
16        },
17    }
18}
19
20macro_rules! broadcastable_ops {
21    ($(($trait:ident, $op:ident))+) => {
22        $(
23        impl std::ops::$trait for Column {
24            type Output = PolarsResult<Column>;
25
26            #[inline]
27            fn $op(self, rhs: Self) -> Self::Output {
28                self.try_apply_broadcasting_binary_elementwise(&rhs, |l, r| l.$op(r))
29            }
30        }
31
32        impl std::ops::$trait for &Column {
33            type Output = PolarsResult<Column>;
34
35            #[inline]
36            fn $op(self, rhs: Self) -> Self::Output {
37                self.try_apply_broadcasting_binary_elementwise(rhs, |l, r| l.$op(r))
38            }
39        }
40        )+
41    }
42}
43
44macro_rules! broadcastable_num_ops {
45    ($(($trait:ident, $op:ident))+) => {
46        $(
47        impl<T> std::ops::$trait::<T> for Column
48        where
49            T: Num + NumCast,
50        {
51            type Output = Self;
52
53            #[inline]
54            fn $op(self, rhs: T) -> Self::Output {
55                num_op_with_broadcast(&self, rhs, |l, r| l.$op(r))
56            }
57        }
58
59        impl<T> std::ops::$trait::<T> for &Column
60        where
61            T: Num + NumCast,
62        {
63            type Output = Column;
64
65            #[inline]
66            fn $op(self, rhs: T) -> Self::Output {
67                num_op_with_broadcast(self, rhs, |l, r| l.$op(r))
68            }
69        }
70        )+
71    };
72}
73
74broadcastable_ops! {
75    (Add, add)
76    (Sub, sub)
77    (Mul, mul)
78    (Div, div)
79    (Rem, rem)
80    (BitAnd, bitand)
81    (BitOr, bitor)
82    (BitXor, bitxor)
83}
84
85broadcastable_num_ops! {
86    (Add, add)
87    (Sub, sub)
88    (Mul, mul)
89    (Div, div)
90    (Rem, rem)
91}
polars_core/frame/column/arithmetic.rs

polars_core/frame/column/
arithmetic.rs
