Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_GetIOSize - Use this function to get the size of the data stream in an SDL_IOStream.
SYNOPSIS
#include <SDL3/SDL_iostream.h>
Sint64 SDL_GetIOSize(SDL_IOStream *context);
FUNCTION PARAMETERS
context
the SDL_IOStream to get the size of the data stream from.
RETURN VALUE
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 3.2.20 SDL_GetIOSize(3)