Manual Reference Pages - MEMOVERLAP (3)
memoverlap - check whether two memory blocks overlap
int memoverlap(const void *t, size_t ts, const void *s, size_t ss);
memoverlap checks whether the memory blocks t--(t+ts-1)
and s--(s+ss-1) overlap. Neither pointer argument may be
NULL, but the sizes may be 0. The memory blocks can be arbitrary, they
do not have to be part of the same array. Therefore, this function hides
the unportable pointer comparison that one would otherwise rely on.
memoverlap returns 0 if the blocks do not overlap, and nonzero
if they do.
Lars Wirzenius (firstname.lastname@example.org)
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