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std::calloc

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Defined in header <cstdlib>
void* calloc( std::size_t num, std::size_t size );

Allocates memory for an array of num objects of size size, initializes it to all bits zero (implicitly creating objects in the destination area).

If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any object type.

If size is zero, the behavior is implementation defined (null pointer may be returned, or some non-null pointer may be returned that may not be used to access storage).

The following functions are required to be thread-safe:

Calls to these functions that allocate or deallocate a particular unit of storage occur in a single total order, and each such deallocation call happens-before the next allocation (if any) in this order.

(since C++11)

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