Bitmap4Rust

A Rust library for creating and manipulating Bitmaps.

API

The bitmap is maintained in a byte vector of appropriate size. Hence, it's type should be Vec<u8>.

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pub fn bitmap_create(bitmap_size: &mut u64) -> Vec<u8>

Used to create the bitmap. Since the bitmap is maintained as a byte vector, it must be of type Vec<u8>.

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pub fn clear_bit(bitmap: &mut Vec<u8>, bitno: u64) -> i32

Used to clear the bit at bitno, i.e, set it to 0. If bitno is larger than the bitmap's size, -1 is returned.

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pub fn set_bit(bitmap: &mut Vec<u8>, bitno: u64) -> i32

Used to set the bit at bitno, i.e, set it to 1. If bitno is larger than the bitmap's size, -1 is returned.

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pub fn get_first_set_bit(bitmap: &mut Vec<u8>) -> i64

Used to get the first bit of bitmap that is set to 1. Returns -1 if none are set.

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pub fn get_first_unset_bit(bitmap: &mut Vec<u8>) -> i64 

Used to get the first bit of bitmap that is set to 0. Returns -1 if all bits are set.

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pub fn check_bit(bitmap: &mut Vec<u8>, bitno: u64) -> i32

Used to check the value of the bit corresponding to bitno.

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Usage

• Add the dependency bitmap4rust in Cargo.toml

[dependencies]
bitmap4rust = "1.0.1"

• Include the crate bitmap4rust

extern crate bitmap4rust;