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spec: mention Inf and NaN are supported at run time.
add hyperlink at mention of package reflect. Fixes #438. R=r CC=golang-dev https://golang.org/cl/190042
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@ -507,6 +507,16 @@ can be given the types <code>float32</code>, <code>float64</code>, or <code>uint
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not <code>int32</code> or <code>string</code>.
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</p>
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<p>
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There are no constants denoting the IEEE-754 infinity and not-a-number values,
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but the <a href="/pkg/math/"><code>math</code> package</a>'s
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<a href="/pkg/math/#Inf">Inf</a>,
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<a href="/pkg/math/#NaN">NaN</a>,
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<a href="/pkg/math/#IsInf">IsInf</a>, and
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<a href="/pkg/math/#IsNaN">IsNaN</a>
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functions return and test for those values at run time.
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</p>
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<p>
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Implementation restriction: A compiler may implement numeric constants by choosing
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an internal representation with at least twice as many bits as any machine type;
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@ -4681,7 +4691,7 @@ value and returns both the type and the address of the copy.
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<code>Unreflect</code> inverts <code>Reflect</code>,
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creating an
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interface value from a type and address.
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The <code>reflect</code> package built on these primitives
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The <a href="/pkg/reflect/"><code>reflect</code> package</a> built on these primitives
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provides a safe, more convenient way to inspect interface values.
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</p>
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