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

NAME
SDL_TellIO - Determine the current read/write offset in an SDL_IOStream
data stream.
HEADER FILE
Defined in SDL3/SDL_iostream.h
SYNOPSIS
#include "SDL3/SDL.h"
Sint64 SDL_TellIO(SDL_IOStream *context);
DESCRIPTION
SDL_TellIO
is actually a wrapper function that calls the
SDL_IOStream seek method, with an offset of 0 bytes from SDL_IO_SEEK_CUR , to simplify application
development.
FUNCTION PARAMETERS
context
an SDL_IOStream
data stream object from which to get the current offset.
RETURN VALUE
( Sint64 ) Returns the current offset in the stream, or -1 if the information can not be determined.
THREAD SAFETY
This function is not thread safe.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_SeekIO(3)
Simple Directmedia Layer SDL 3.2.8 SDL_TellIO(3)