Trait rug::ops::RemRounding
source · pub trait RemRounding<Rhs = Self> {
type Output;
// Required methods
fn rem_trunc(self, rhs: Rhs) -> Self::Output;
fn rem_ceil(self, rhs: Rhs) -> Self::Output;
fn rem_floor(self, rhs: Rhs) -> Self::Output;
fn rem_euc(self, rhs: Rhs) -> Self::Output;
}Expand description
Rounding variants of the remainder operation.
Examples
use rug::ops::RemRounding;
struct I(i32);
impl RemRounding<i32> for I {
type Output = i32;
fn rem_trunc(self, rhs: i32) -> i32 {
self.0 % rhs
}
fn rem_ceil(self, rhs: i32) -> i32 {
let r = self.0 % rhs;
let change = if rhs > 0 { r > 0 } else { r < 0 };
if change {
r - rhs
} else {
r
}
}
fn rem_floor(self, rhs: i32) -> i32 {
let r = self.0 % rhs;
let change = if rhs > 0 { r < 0 } else { r > 0 };
if change {
r + rhs
} else {
r
}
}
fn rem_euc(self, rhs: i32) -> i32 {
let r = self.0 % rhs;
if r < 0 {
if rhs < 0 {
r - rhs
} else {
r + rhs
}
} else {
r
}
}
}
assert_eq!(I(-10).rem_trunc(-3), -1);
assert_eq!(I(-10).rem_ceil(-3), 2);
assert_eq!(I(-10).rem_floor(-3), -1);
assert_eq!(I(-10).rem_euc(-3), 2);Required Associated Types§
Required Methods§
sourcefn rem_trunc(self, rhs: Rhs) -> Self::Output
fn rem_trunc(self, rhs: Rhs) -> Self::Output
Finds the remainder when the quotient is rounded towards zero.
sourcefn rem_ceil(self, rhs: Rhs) -> Self::Output
fn rem_ceil(self, rhs: Rhs) -> Self::Output
Finds the remainder when the quotient is rounded up.