calloc vs malloc

[svar]

Just to check I understand this right:
calloc says : I want a chunk of memory of this size AND it has to be contiguous(consecutive memory locations)
malloc says: I need this memory and I don't care where
you find it and if it's contiguous or not
realloc says: I need to change a previous calloced memory
and it still needs to be contiguous and if the originally allocated memory cannot be expanded, it should try to find a different contiguous memory of the requested size AND
copy the originally allocated data to the new memory block

Is that basically right?

 

[ArkM]

C RTL malloc() never said about non-contiguous memory chunk. It's a nonsense. Many years ago IBM OS/360 have had a macros with non-contiguos memory request. It's a hystory...
C RTL calloc() fills malloc'ed memory chunk with zeroes.
C RTL realloc() needs previously malloc'ed (not specifically calloc'ed) pointer.
That's all...