---
name: "uint64_pack"
section: "3"
platform: "linux"
package: "libowfat-dev"
version: "0.32-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/uint64_pack"
---

# uint64\_pack(3)

write an unsigned little-endian 64-bit integer

## NAME

uint64\_pack - write an unsigned little-endian 64-bit integer

## SYNTAX

**#include \<libowfat/uint64.h\>**

uint64 *u*;

void **uint64\_pack**(char *s*\[4\],uint64 *u*);

## DESCRIPTION

uint64 is a 64-bit unsigned integer type.

uint64\_pack portably writes a uint64 *u* to *s* in little-endian byte order.

## SEE ALSO

[uint64\_unpack(3)](/uint64_unpack/3.md), [uint64\_pack\_big(3)](/uint64_pack_big/3.md)