Packs nodeCount 64-byte nodes (floats/words from nodeWordOffset,
node 0 the root) into a frame slot and nodeCount 32-byte nodes at
out[outWordOffset..]. The frame comes from the root's children. This is
both the builders' packing and the CPU half of a refit's re-quantize: refit
the 64-byte copy (refitOnCpu), then pack it again. Returns the frame.
Packs
nodeCount64-byte nodes (floats/wordsfromnodeWordOffset, node 0 the root) into a frame slot andnodeCount32-byte nodes atout[outWordOffset..]. The frame comes from the root's children. This is both the builders' packing and the CPU half of a refit's re-quantize: refit the 64-byte copy (refitOnCpu), then pack it again. Returns the frame.