Trait rug::ops::DivRoundingAssign
source · pub trait DivRoundingAssign<Rhs = Self> {
// Required methods
fn div_trunc_assign(&mut self, rhs: Rhs);
fn div_ceil_assign(&mut self, rhs: Rhs);
fn div_floor_assign(&mut self, rhs: Rhs);
fn div_euc_assign(&mut self, rhs: Rhs);
}Expand description
Compound assignment and rounding variants of division.
§Examples
use rug::ops::DivRoundingAssign;
struct I(i32);
impl DivRoundingAssign<i32> for I {
fn div_trunc_assign(&mut self, rhs: i32) {
self.0 /= rhs;
}
fn div_ceil_assign(&mut self, rhs: i32) {
let (q, r) = (self.0 / rhs, self.0 % rhs);
let change = if rhs > 0 { r > 0 } else { r < 0 };
self.0 = if change { q + 1 } else { q };
}
fn div_floor_assign(&mut self, rhs: i32) {
let (q, r) = (self.0 / rhs, self.0 % rhs);
let change = if rhs > 0 { r < 0 } else { r > 0 };
self.0 = if change { q - 1 } else { q };
}
fn div_euc_assign(&mut self, rhs: i32) {
let (q, r) = (self.0 / rhs, self.0 % rhs);
self.0 = if r < 0 {
if rhs < 0 {
q + 1
} else {
q - 1
}
} else {
q
};
}
}
let mut div_floor = I(-10);
div_floor.div_floor_assign(3);
assert_eq!(div_floor.0, -4);Required Methods§
sourcefn div_trunc_assign(&mut self, rhs: Rhs)
fn div_trunc_assign(&mut self, rhs: Rhs)
Performs division, rounding the quotient towards zero.
sourcefn div_ceil_assign(&mut self, rhs: Rhs)
fn div_ceil_assign(&mut self, rhs: Rhs)
Performs division, rounding the quotient up.
sourcefn div_floor_assign(&mut self, rhs: Rhs)
fn div_floor_assign(&mut self, rhs: Rhs)
Performs division, rounding the quotient down.
sourcefn div_euc_assign(&mut self, rhs: Rhs)
fn div_euc_assign(&mut self, rhs: Rhs)
Performs Euclidean division, rounding the quotient so that the remainder cannot be negative.