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rational: add From<(i32, i32)> for Rational

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This commit is contained in:
meh 2015-08-25 15:50:18 +02:00
parent a282d85662
commit 2baf1deaab
1 changed files with 18 additions and 12 deletions
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30
src/util/rational.rs
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@ -73,18 +73,6 @@ impl Into<AVRational> for Rational {
} }
} }
impl fmt::Display for Rational {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
f.write_str(&format!("{}/{}", self.numerator(), self.denominator()))
}
}
impl fmt::Debug for Rational {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
f.write_str(&format!("Rational({}/{})", self.numerator(), self.denominator()))
}
}
impl From<f64> for Rational { impl From<f64> for Rational {
#[inline] #[inline]
fn from(value: f64) -> Rational { fn from(value: f64) -> Rational {
@ -112,6 +100,12 @@ impl From<Rational> for u32 {
} }
} }
impl From<(i32, i32)> for Rational {
fn from((num, den): (i32, i32)) -> Rational {
Rational::new(num, den)
}
}
impl PartialEq for Rational { impl PartialEq for Rational {
fn eq(&self, other: &Rational) -> bool { fn eq(&self, other: &Rational) -> bool {
if self.0 == other.0 && self.1 == other.1 { if self.0 == other.0 && self.1 == other.1 {
@ -190,6 +184,18 @@ impl Div for Rational {
} }
} }
impl fmt::Display for Rational {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
f.write_str(&format!("{}/{}", self.numerator(), self.denominator()))
}
}
impl fmt::Debug for Rational {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
f.write_str(&format!("Rational({}/{})", self.numerator(), self.denominator()))
}
}
#[inline] #[inline]
pub fn nearer(q: Rational, q1: Rational, q2: Rational) -> Ordering { pub fn nearer(q: Rational, q1: Rational, q2: Rational) -> Ordering {
unsafe { unsafe {