---
name: "fmt_8long"
section: "3diet"
platform: "linux"
package: "libowfat-dev"
version: "0.28-2"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/fmt_8long/3diet"
---

# fmt\_8long(3diet)

write an octal ASCII representation of an unsigned long integer

## NAME

fmt\_8long - write an octal ASCII representation of an unsigned long integer

## SYNTAX

**#include \<fmt.h\>**

size\_t **fmt\_8long**(char \**dest*,size\_t *source*);

## DESCRIPTION

fmt\_8long writes an ASCII representation ('0' to '7', base 8) of *source* to *dest* and returns the number of bytes written.

fmt\_8long does not append \\0.

If *dest* equals FMT\_LEN (i.e. is zero), fmt\_8long returns the number of bytes it would have written.

For convenience, fmt.h defines the integer FMT\_8LONG to be big enough to contain every possible fmt\_8long output plus \\0.

## SEE ALSO

[scan\_8long(3)](/scan_8long/3.md)