[rcore] Add ComputeSHA256() function

[JohnnyCena123]

No description provided.

[manuel5975p]

Just a minor suggestion, maybe pick more "unique" names for the macros otherwise it might affect other code and emit "already defined" warnings.

[raysan5]

@JohnnyCena123 thanks for the addition, added some details to be reviewed

[raysan5]

@manuel5975p That's a good point, also macros can be undefined at the end of the function.

[JohnnyCena123]

@JohnnyCena123 im getting incorrect results when i try this. can you show a minimal main.c that tests this?

already have 2 ready yeah
sha256-buffer.c
sha256-stream.c

[raysan5]

@CrackedPixel Did you review this implementation against @manuel5975p one? Are the results as expected?

Out of curiosity, do both implementations have a similar performance?

[manuel5975p]

This causes undefined behaviour for valid values of dataSize because both are signed integers (dataSize and the 8 literal)

[JohnnyCena123]

there have been some updates

[raysan5]

@JohnnyCena123 thanks for the addition. Did you verify it generates same results as the alternative implementation by @manuel5975p, #5266?