HTONL(3P)

💖 htonl, htons, ntohl, ntohs — bestie edition 💖

okay so. welcome to the POSIX Programmer's Manual, page HTONL(3P) — yes the title is HTONL(3P) but we're covering four functions here, they just travel as a squad 🫶

✨ PROLOG

So like, this manual page is part of the POSIX Programmer's Manual. But heads up bestie: the Linux implementation of this interface may differ (so go consult the corresponding Linux manual page for the deets on Linux behavior), or the interface may not even be implemented on Linux at all. 😭 Not me warning you about platform drama in the first paragraph.

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👑 NAME

htonl, htons, ntohl, ntohs — convert values between host and network byte order. it's giving translator energy fr fr 🌐

🌸 SYNOPSIS

#include <arpa/inet.h>

uint32_t htonl(uint32_t hostlong);
uint16_t htons(uint16_t hostshort);
uint32_t ntohl(uint32_t netlong);
uint16_t ntohs(uint16_t netshort);

🦋 DESCRIPTION

So what these functions do is: they shall convert 16-bit and 32-bit quantities between network byte order and host byte order. that's the whole vibe. 💅

On some implementations, these functions are defined as macros. iykyk.

Also, the uint32_t and uint16_t types are defined in <inttypes.h>. periodt.

🎀 RETURN VALUE

• The htonl() and htons() functions shall return the argument value converted from host to network byte order. 🡒
• The ntohl() and ntohs() functions shall return the argument value converted from network to host byte order. 🡐

💀 ERRORS

No errors are defined. not a single one. flawless behavior, no notes. ✨

The following sections are informative.

🍓 EXAMPLES

None. (yes, really. the examples section is empty. it's giving minimalist. 💀)

💜 APPLICATION USAGE

These functions are most often used in conjunction with IPv4 addresses and ports as returned by gethostent() and getservent(). that's the main character usage scenario bestie 🌈

🧚 RATIONALE

None.

⭐ FUTURE DIRECTIONS

None.

🔥 SEE ALSO

• endhostent(), endservent()
• The Base Definitions volume of POSIX.1‐2017, <arpa_inet.h>, <inttypes.h>

🌸 COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

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okay that's the whole page bestie, every single detail intact, no cap 🫶 go convert your bytes and slay 💅

IEEE/The Open Group · 2017 · HTONL(3P) — mwah, ty for reading, ily, bye! 💖✨🎀