alamb commented on code in PR #9090:
URL: https://github.com/apache/arrow-rs/pull/9090#discussion_r2657810925
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arrow-buffer/src/buffer/boolean.rs:
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@@ -254,6 +254,111 @@ impl BooleanBuffer {
Some(BooleanBuffer::new(buffer, 0, len_in_bits))
}
+ /// Create a new [`BooleanBuffer`] by applying the bitwise operation `op`
to
+ /// the relevant bits from two input buffers.
+ ///
+ /// This function is faster than applying the operation bit by bit as
+ /// it processes input buffers in chunks of 64 bits (8 bytes) at a time
+ ///
+ /// # Notes:
+ /// See notes on [Self::from_bitwise_unary_op]
+ ///
+ /// # See Also
+ /// - [`BooleanBuffer::from_bitwise_unary_op`] for unary operations on a
single input buffer.
+ /// - [`apply_bitwise_binary_op`](bit_util::apply_bitwise_binary_op) for
in-place binary bitwise operations
+ ///
+ /// # Example: Create new [`BooleanBuffer`] from bitwise `AND` of two
[`Buffer`]s
+ /// ```
+ /// # use arrow_buffer::{Buffer, BooleanBuffer};
+ /// let left = Buffer::from(vec![0b11001100u8, 0b10111010u8]); // 2 bytes
= 16 bits
+ /// let right = Buffer::from(vec![0b10101010u8, 0b11011100u8,
0b11110000u8]); // 3 bytes = 24 bits
+ /// // AND of the first 12 bits
+ /// let result = BooleanBuffer::from_bitwise_binary_op(
+ /// &left, 0, &right, 0, 12, |a, b| a & b
+ /// );
+ /// assert_eq!(result.inner().as_slice(), &[0b10001000u8, 0b00001000u8]);
+ /// ```
+ ///
+ /// # Example: Create new [`BooleanBuffer`] from bitwise `OR` of two byte
slices
+ /// ```
+ /// # use arrow_buffer::BooleanBuffer;
+ /// let left = [0b11001100u8, 0b10111010u8];
+ /// let right = [0b10101010u8, 0b11011100u8];
+ /// // OR of bits 4..16 from left and bits 0..12 from right
+ /// let result = BooleanBuffer::from_bitwise_binary_op(
+ /// &left, 4, &right, 0, 12, |a, b| a | b
+ /// );
+ /// assert_eq!(result.inner().as_slice(), &[0b10101110u8, 0b00001111u8]);
+ /// ```
+ pub fn from_bitwise_binary_op<F>(
Review Comment:
this is the new API
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