Add signed integer types as implementors of the nonzeroable traits#7
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Add signed integer types as implementors of the nonzeroable traits#7
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This reflects the stable additions from a few releases ago.
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Since casting negative numbers to usize seems really wrong (and it triggers rust-lang/rust#67539 on nightlies). Let's use .count_ones() to get a guarantee that the number we have is non-zero instead.
* Allow main in doctests, we need them for no_std. * Add a Safety section to as_nonzero_unchecked.
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