How to check whether all bytes in a memory block are zero

Question

I have a block of memory with elements of fixed size, say 100 bytes, put into it one after another, all with the same fixed length, so memory looks like this

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Answer 1

AFAIK there is no automatically function to check memory.

You could use | to speed up the for-loop, no need for "=="

char *elementStart = memoryBlock + elementNr*fixedElementSize;
char special = 0;
for ( size_t curByteNr=0; curByteNr

and also can you use long for even more speed

char *elementStart = memoryBlock + elementNr*fixedElementSize;
long special = 0;
for ( size_t curByteNr=0; curByteNr

WARNING: the above code is not tested. Please test it first so that the sizeof and casting operator works