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< title > num::signum - Rust< / title >
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< h1 class = 'fqn' > < span class = 'in-band' > Function < a href = 'index.html' > num< / a > ::< wbr > < a class = "fn" href = '' > signum< / a > < / span > < span class = 'out-of-band' > < span id = 'render-detail' >
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< / span > < a class = 'srclink' href = '../src/num_traits/sign.rs.html#175' title = 'goto source code' > [src]< / a > < / span > < / h1 >
< pre class = 'rust fn' > pub fn signum< T> (value: T) -> T < span class = "where fmt-newline" > where< br > T: < a class = "trait" href = "../num/trait.Signed.html" title = "trait num::Signed" > Signed< / a > , < / span > < / pre > < div class = 'docblock' > < p > Returns the sign of the number.< / p >
< p > For < code > f32< / code > and < code > f64< / code > :< / p >
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< li > < code > 1.0< / code > if the number is positive, < code > +0.0< / code > or < code > INFINITY< / code > < / li >
< li > < code > -1.0< / code > if the number is negative, < code > -0.0< / code > or < code > NEG_INFINITY< / code > < / li >
< li > < code > NaN< / code > if the number is < code > NaN< / code > < / li >
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< p > For signed integers:< / p >
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< li > < code > 0< / code > if the number is zero< / li >
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