SDL_calloc(3)

💖 SDL_calloc(3) 💖

okay bestie, welcome to the SDL3 FUNCTIONS corner of the manual, where we allocate memory and are so normal about it ✨

---

🌸 NAME 🌸

SDL_calloc — allocate a zero-initialized array. yes, zeroed. every byte starts at 0. it's giving "fresh notebook, no scribbles" 🎀

---

🦋 SYNOPSIS 🦋

#include <SDL3/SDL_stdinc.h>

void * SDL_calloc(size_t nmemb, size_t size);

---

✨ DESCRIPTION ✨

So here's the tea, bestie. SDL_calloc hands you back a chunk of memory sized for an array, and it's already zeroed out for you so you don't have to go scrub it yourself. main character behavior fr fr 💅

🚨 IMPORTANT: the memory this function gives you must be freed with SDL_free(). not free(), not vibes, not hoping the OS picks it up later. SDL_free(). periodt.

And here's a lil quirk that lowkey matters: if either nmemb or size is 0, they will both be set to 1. like, the function looks at a zero and goes "not on my watch, we're making that a one" 😭 so you never get a truly zero-size request through.

If the allocation is successful, the returned pointer is guaranteed to be aligned to either the fundamental alignment (alignof(max_align_t) in C11 and later) or 2 * sizeof(void *), whichever is smaller. so like, it's aligned, but aligned responsibly. no over-promising 🫶

---

🧚 FUNCTION PARAMETERS 🧚

• nmemb — the number of elements in the array. how many lil guys you want in the lineup 👑
• size — the size of each element of the array. how big each lil guy is 🌸

---

⭐ RETURN VALUE ⭐

Returns a pointer to the allocated array, or NULL if allocation failed. that's it, that's the whole deal. if you get NULL, the memory said no and you have to respect it 💀

---

🌈 THREAD SAFETY 🌈

It is safe to call this function from any thread. so go wild, spawn all the threads, everybody gets to SDL_calloc 🔥 no cap.

---

💜 AVAILABILITY 💜

This function is available since SDL 3.2.0. if you're on something older, bestie, it's not there, and no amount of refreshing will fix that 🙈

---

🎀 SEE ALSO 🎀

• SDL_free(3)
• SDL_malloc(3)
• SDL_realloc(3)

like, the whole friend group. SDL_malloc(3) is the chaotic one, SDL_realloc(3) is the one who keeps changing plans, and SDL_free(3) is the one who actually cleans up. iykyk 💖

---

and that's the page!! brought to you by Simple Directmedia Layer, version SDL 3.4.18 🦋 go forth and zero-initialize responsibly, bestie, and don't forget to SDL_free() 🫶✨