MEMREV(3pub)

💖 MEMREV(3pub) — bestie's guide to flipping arrays 💖

okay so this is a page from the C Programmer's Manual, and it's literally all about one tiny iconic function: memrev. she's from publib btw, iykyk 🫶

---

✨ NAME ✨

memrev — reverse an array in place. no copy, no extra memory, just vibes and swapping 🦋

---

🌸 SYNOPSIS 🌸

#include <publib.h>
void *memrev(void *block, size_t elsize, size_t elnum);

---

🎀 DESCRIPTION 🎀

memrev will reverse an array, by swapping the contents of its elements. that's it. that's the whole function. no cap, she does one thing and she eats 🔥

like the way that it just takes your array and flips the whole order around, no notes 💅

---

👑 RETURN VALUE 👑

memrev returns its first argument. so like, it hands you back block, your own pointer, as a little treat 🍓

---

⭐ EXAMPLE ⭐

to reverse an integer array one might do the following, bestie:

int array[4] = { 1, 2, 3, 4 };

memrev(array, sizeof(array[0]), 4);

This will result in the array being { 4, 3, 2, 1 }.

periodt. 💜

---

🌈 SEE ALSO 🌈

• publib(3)
• strrev(3)
• memshuffle(3)

(the little publib family fr fr)

---

💖 AUTHOR 💖

Lars Wirzenius (lars.wirzenius@helsinki.fi)

---

ngl this is the entire page, there's no hidden lore, no deprecated warnings, no undefined behaviour lurking. just a cute little array-flipper. go forth and reverse, main character 🌟

okay bye ily, this was the Publib version of the C Programmer's Manual — MEMREV(3pub) — mwah 💅🧚✨