Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_GetIOSize - Use this function to get the size of the data stream in an SDL_IOStream .
HEADER FILE
Defined in SDL3/SDL_iostream.h
SYNOPSIS
#include "SDL3/SDL.h" Sint64 SDL_GetIOSize(SDL_IOStream *context);
FUNCTION PARAMETERS
context the SDL_IOStream to get the size of the data stream from.
RETURN VALUE
( Sint64 ) Returns the size of the data stream in the SDL_IOStream on success or a negative error code on failure; call SDL_GetError () for more information.
THREAD SAFETY
This function is not thread safe.
AVAILABILITY
This function is available since SDL 3.2.0. Simple Directmedia Layer SDL 3.2.8 SDL_GetIOSize(3)