Make clippy happy.

Author: thejpster

clippy.toml

@@ -0,0 +1 @@
+doc-valid-idents = ["MHz", "THz", "GHz", "kHz"]

examples/format_test.rs

@@ -3,7 +3,7 @@ use measurements::*;
 
 fn main() {
     for power in -12..12 {
-        let val: f64 = 123.456 * (10f64.powf(power as f64));
+        let val: f64 = 123.456 * (10f64.powf(f64::from(power)));
         println!("10^{}...", power);
         println!("Temp of {0:.3} outside", Temperature::from_kelvin(val));
         println!("Distance of {0:.3}", Length::from_meters(val));

src/lib.rs

@@ -114,7 +114,7 @@ macro_rules! impl_maths {
 
 impl Measurement for std::time::Duration {
     fn as_base_units(&self) -> f64 {
-        self.as_secs() as f64 + ((self.subsec_nanos() as f64) * 1e-9)
+        self.as_secs() as f64 + (f64::from(self.subsec_nanos()) * 1e-9)
     }
 
     fn from_base_units(units: f64) -> Self {

src/measurement.rs

@@ -52,7 +52,7 @@ pub trait Measurement {
     /// The list must be smallest to largest, e.g. ("nanometre", 10-9) to
     /// ("kilometre", 10e3)
     fn pick_appropriate_units(&self, list: &[(&'static str, f64)]) -> (&'static str, f64) {
-        for &(ref unit, ref scale) in list.iter().rev() {
+        for &(unit, ref scale) in list.iter().rev() {
             let value = self.as_base_units() / scale;
             if value.abs() > 1.0 {
                 return (unit, value);