---
name: "ck_bitmap_size"
section: "3"
platform: "linux"
package: "libck-dev"
version: "0.7.2-6"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ck_bitmap_size"
---

# ck\_bitmap\_size(3)

returns necessary number of bytes for bitmap

## NAME

**ck\_bitmap\_size** – returns necessary number of bytes for bitmap

## LIBRARY

Concurrency Kit (libck, -lck)

## SYNOPSIS

**#include \<ck\_bitmap.h\>**

*unsigned* *int*\

**ck\_bitmap\_size**(*unsigned int n\_bits*);

## DESCRIPTION

The **ck\_bitmap\_size**() function returns the number of bytes that are necessary to allocate for a bitmap that will contain the number of bits specified by *n\_bits*.

This function is used to determine how many bytes to allocate for dynamically created bitmap objects. The allocated object must still be initialized using [ck\_bitmap\_init(3)](/ck_bitmap_init/3.md).

## RETURN VALUES

This function returns a non-zero value.

## SEE ALSO

[ck\_bitmap\_base(3)](/ck_bitmap_base/3.md), [ck\_bitmap\_init(3)](/ck_bitmap_init/3.md), [ck\_bitmap\_set\_mpmc(3)](/ck_bitmap_set_mpmc/3.md), [ck\_bitmap\_reset\_mpmc(3)](/ck_bitmap_reset_mpmc/3.md), [ck\_bitmap\_test(3)](/ck_bitmap_test/3.md), [ck\_bitmap\_clear(3)](/ck_bitmap_clear/3.md), [ck\_bitmap\_bits(3)](/ck_bitmap_bits/3.md), [ck\_bitmap\_buffer(3)](/ck_bitmap_buffer/3.md)

Additional information available at http://concurrencykit.org/