getpagesize() vs. sysconf(_SC_PAGESIZE)

Question

Both in general and with regard to cross-platform support, is one function -- getpagesize() vs. sysconf(_SC_PAGESIZE) -- more reliable than the other?

Answer 1

After some additional searching, I've discovered that getpagesize() was deprecated in POSIX issue 6. So, sysconf(_SC_PAGESIZE) should be used instead.