SDL_ReadS64LE(3)

💖 SDL_ReadS64LE(3) — SDL3 FUNCTIONS 💖

okay bestie, so this one is a lil SDL3 function and honestly? it's giving "tiny but mighty". sit down, grab a strawberry, let's go 🍓

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✨ NAME ✨

SDL_ReadS64LE — use this function to read 64 bits of little-endian data from an SDL_IOStream and return it in native format. 💅

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🌸 SYNOPSIS 🌸

#include <SDL3/SDL_iostream.h>

bool SDL_ReadS64LE(SDL_IOStream *src, Sint64 *value);

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🦋 DESCRIPTION 🦋

okay so the vibe here is: SDL byteswaps the data only if necessary, which means the data you get back will be in the native byte order. no cap. it's not out here doing extra work for no reason, she's efficient. 👑

Now here's the part you actually need to know, and I need you to focus because this is the plot twist 😭 — this function will return false when the data stream is completely read, and SDL_GetIOStatus() will return SDL_IO_STATUS_EOF. But — and this is the important but — if false is returned and the stream is not at EOF, then SDL_GetIOStatus() will return a different error value, and SDL_GetError() will offer you a human-readable message. so like, false doesn't always mean "we ran out of data", sometimes it means "something went wrong bestie". check the status. always check the status. 🫶

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🎀 FUNCTION PARAMETERS 🎀

• src — the stream from which to read data. the source of truth, the main character of this whole operation 🌈
• value — a pointer filled in with the data read. yes, filled in, meaning you pass it a pointer and she does the rest 💖

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🔥 RETURN VALUE 🔥

Returns true on successful read, or false on failure. and if it's false? call SDL_GetError() for more information, because she will tell you what went wrong, you just gotta ask. ✨

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💀 THREAD SAFETY 💀

Do not use the same SDL_IOStream from two threads at once. I'm so serious. that's not a vibe, that's a data race, and nobody wants that energy in their codebase 🙈

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⭐ AVAILABILITY ⭐

This function is available since SDL 3.2.0. so if you're on something older... it's not there. it's giving "you gotta upgrade, babe". 👑

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lowkey the whole thing in one breath: read 64 little-endian bits, get them back native, true = slay, false = check SDL_GetIOStatus() and SDL_GetError(), and never share a stream across threads. periodt. 💅

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mwah, that's the whole page! this lil masterpiece lives in the Simple Directmedia Layer manual, SDL 3.4.18 edition, and it's filed under SDL_ReadS64LE(3) in SDL3 FUNCTIONS. go forth and read your bytes, bestie 🧚💜