Subset of C standard library.
This module implements some functions from libc. Thus it eases linking Drone
applications with C libraries.
Dynamic memory functions (e.g. malloc, free) are implemented in terms of
Drone Heap.
| calloc⚠ | Allocates memory for an array of nmemb elements of size bytes each and
returns a pointer to the allocated memory. The memory is set to zero. If
nmemb or size is 0, then it returns either NULL, or a unique pointer
value that can later be successfully passed to free.
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| free⚠ | Frees the memory space pointed to by ptr, which must have been returned by
a previous call to malloc, calloc, or
realloc. Otherwise, or if free(ptr) has already been called
before, undefined behavior occurs. If ptr is NULL, no operation is
performed.
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| malloc⚠ | Allocates size bytes and returns a pointer to the allocated memory. The
memory is not initialized. If size is 0, then it returns either NULL,
or a unique pointer value that can later be successfully passed to
free.
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| realloc⚠ | Changes the size of the memory block pointed to by ptr to size bytes.
The contents will be unchanged in the range from the start of the region up
to the minimum of the old and new sizes. If the new size is larger than the
old size, the added memory will not be initialized. If ptr is NULL, then
the call is equivalent to malloc(size), for all values of size; if
size is equal to zero, and ptr is not NULL, then the call is
equivalent to free(ptr). Unless ptr is NULL, it must have been
returned by an earlier call to malloc, calloc, or
realloc. If the area pointed to was moved, a free(ptr) is
done.
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| strchr⚠ | Returns a pointer to the first occurrence of the character c in the string
s.
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| strcmp⚠ | Compares the two strings s1 and s2. It returns an integer less than,
equal to, or greater than zero if s1 is found, respectively, to be less
than, to match, or be greater than s2.
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| strlen⚠ | Calculates the length of the string s, excluding the terminating null byte
('\0').
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| size_t | A type able to represent the size of any object in bytes.
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