Question about the function,ni_stc_dma_channel_select_bitfield

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Greetings All,
I am wondering if in the function,ni_stc_dma_channel_select_bitfield the line:
return 1 << channel;
is guaranteed to be below the threshold that guarantees us to not overflow on
a unsigned 32 integer due to bit wise shifting to the left. 
Thanks Nick
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