rustfmt'ed + some clean up

Author: rrbutani

src/math/mod.rs

@@ -49,8 +49,8 @@ mod log1pf;
 mod log2;
 mod log2f;
 mod logf;
-mod powf;
 mod pow;
+mod powf;
 mod round;
 mod roundf;
 mod scalbn;
@@ -111,8 +111,8 @@ pub use self::log1pf::log1pf;
 pub use self::log2::log2;
 pub use self::log2f::log2f;
 pub use self::logf::logf;
-pub use self::powf::powf;
 pub use self::pow::pow;
+pub use self::powf::powf;
 pub use self::round::round;
 pub use self::roundf::roundf;
 pub use self::scalbn::scalbn;