kroundup_size_t

round 32 or 64 bit (u)int x to power of 2 that is equal or greater (JSB) new impl based on #define kroundup64(x) ((x) > 0 ? \

@system nothrow @nogc pragma(inline, true) extern (D)
void
kroundup_size_t
(
T
)
(
ref T x
)

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