Expand description
General utilities for bitmaps representing items where LSB is the first item.
Structs
This struct is used to efficiently iterate over bit masks by loading bytes on
the stack with alignments of uX. This allows efficient iteration over bitmaps.
An iterator over a slice of bytes in BitChunks.
An iterator over mutable slices of bytes of exact size.
An iterator over bits according to the LSB,
i.e. the bytes [4u8, 128u8] correspond to [false, false, true, false, ..., true].
Iterator over a bitmap that returns slices of set regions
This is the most efficient method to extract slices of values from arrays
with a validity bitmap.
For example, the bitmap 00101111 returns [(0,4), (6,1)]
An iterator adapter that converts an iterator over T and a validity
into an iterator over Option<T> based on the validity.
Traits
A chunk of bits. This is used to create masks of a given length
whose width is 1 bit. In portable_simd notation, this corresponds to m1xY.
Trait representing an exact iterator over bytes in BitChunk.
Functions
Returns the number of bytes required to hold bits bits.
Returns the number of zero bits in the slice offsetted by offset and a length of length.
Formats bytes taking into account an offset and length of the form
Returns whether bit at position i in data is set
Returns whether bit at position i in data is set or not.
Returns whether bit at position i in byte is set or not
Sets bit at position i in byte
Sets bit at position i in data
Sets bit at position i in data without doing bound checks
Returns an iterator adapter that returns Option