Rollup merge of #22030 - mdinger:f32_examples, r=steveklabnik

Some examples for `std::num::Float`

~~This is WIP for making examples for `f32`. This probably won't pass `make tidy` and I'm not sure which `f32` needs documentation. https://github.com/rust-lang/rust/issues/22025 shows 2 sets of `f32` which seems split between `core` and `std`. I'm not sure which should be documented but I started doing a couple from `std`. Easy to move if that's where they go...~~

~~Gotta build it eventually to actually see if the docs actually appear where I think they will or if I'm just disillusioned.~~

cc @steveklabnik
This commit is contained in:
Manish Goregaokar 2015-02-17 15:52:16 +05:30
commit 0e89228361

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