NAME
SDL_crc32 - Calculate a CRC-32 value.
HEADER FILE
Defined in SDL3/SDL_stdinc.h
SYNOPSIS
#include "SDL3/SDL.h"
Uint32 SDL_crc32(Uint32 crc, const void *data, size_t len);
DESCRIPTION
https://en.wikipedia.org/wiki/Cyclic_redundancy_check
This function can be called multiple times, to stream data to be checksummed in blocks. Each call must provide the previous CRC-32 return value to be updated with the next block. The first call to this function for a set of blocks should pass in a zero CRC value.
FUNCTION PARAMETERS
- crc
-
the current checksum for this data set, or 0 for a new data set.
- data
-
a new block of data to add to the checksum.
- len
-
the size, in bytes, of the new block of data.
RETURN VALUE
( Uint32 ) Returns a CRC-32 checksum value of all blocks in the data set.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.