[−][src]Trait rug::ops::DivRoundingFrom

pub trait DivRoundingFrom<Lhs = Self> {
    fn div_trunc_from(&mut self, lhs: Lhs);

    fn div_ceil_from(&mut self, lhs: Lhs);

    fn div_floor_from(&mut self, lhs: Lhs);

    fn div_euc_from(&mut self, lhs: Lhs);
}

Compound assignment to the rhs operand and rounding variants of division.

Examples

use rug::ops::DivRoundingFrom;
struct I(i32);
impl DivRoundingFrom<i32> for I {
    fn div_trunc_from(&mut self, lhs: i32) {
        self.0 = lhs / self.0;
    }
    fn div_ceil_from(&mut self, lhs: i32) {
        let (q, r) = (lhs / self.0, lhs % self.0);
        let change = if self.0 > 0 { r > 0 } else { r < 0 };
        self.0 = if change { q + 1 } else { q };
    }
    fn div_floor_from(&mut self, lhs: i32) {
        let (q, r) = (lhs / self.0, lhs % self.0);
        let change = if self.0 > 0 { r < 0 } else { r > 0 };
        self.0 = if change { q - 1 } else { q };
    }
    fn div_euc_from(&mut self, lhs: i32) {
        let (q, r) = (lhs / self.0, lhs % self.0);
        self.0 = if r < 0 {
            if self.0 < 0 {
                q + 1
            } else {
                q - 1
            }
        } else {
            q
        };
    }
}
let mut div_ceil = I(3);
div_ceil.div_ceil_from(10);
assert_eq!(div_ceil.0, 4);

Required methods

fn div_trunc_from(&mut self, lhs: Lhs)

Performs division, rounding the quotient towards zero.

fn div_ceil_from(&mut self, lhs: Lhs)

Performs division, rounding the quotient up.

fn div_floor_from(&mut self, lhs: Lhs)

Performs division, rounding the quotient down.

fn div_euc_from(&mut self, lhs: Lhs)

Performs Euclidean division, rounding the quotient so that the remainder cannot be negative.

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Implementations on Foreign Types

impl DivRoundingFrom<i8> for i8
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impl<'a> DivRoundingFrom<&'a i8> for i8
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impl DivRoundingFrom<i16> for i16
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impl<'a> DivRoundingFrom<&'a i16> for i16
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impl DivRoundingFrom<i32> for i32
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impl<'a> DivRoundingFrom<&'a i32> for i32
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impl DivRoundingFrom<i64> for i64
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impl<'a> DivRoundingFrom<&'a i64> for i64
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impl DivRoundingFrom<i128> for i128
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impl<'a> DivRoundingFrom<&'a i128> for i128
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impl DivRoundingFrom<isize> for isize
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impl<'a> DivRoundingFrom<&'a isize> for isize
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impl DivRoundingFrom<u8> for u8
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impl<'a> DivRoundingFrom<&'a u8> for u8
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impl DivRoundingFrom<u16> for u16
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impl<'a> DivRoundingFrom<&'a u16> for u16
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impl DivRoundingFrom<u32> for u32
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impl<'a> DivRoundingFrom<&'a u32> for u32
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impl DivRoundingFrom<u64> for u64
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impl<'a> DivRoundingFrom<&'a u64> for u64
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impl DivRoundingFrom<u128> for u128
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impl<'a> DivRoundingFrom<&'a u128> for u128
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impl DivRoundingFrom<usize> for usize
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impl<'a> DivRoundingFrom<&'a usize> for usize
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impl DivRoundingFrom<f32> for f32
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impl<'a> DivRoundingFrom<&'a f32> for f32
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impl DivRoundingFrom<f64> for f64
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impl<'a> DivRoundingFrom<&'a f64> for f64
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Implementors

impl DivRoundingFrom<i32> for Integer
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impl DivRoundingFrom<u32> for Integer
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impl DivRoundingFrom<Integer> for Integer
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impl<'i> DivRoundingFrom<&'i Integer> for Integer
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impl<'t> DivRoundingFrom<&'t i32> for Integer
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impl<'t> DivRoundingFrom<&'t u32> for Integer
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