Trait rug::ops::MulFrom [−][src]
Compound multiplication and assignment to the rhs operand.
rhs.mul_from(lhs) has the same effect as rhs = lhs * rhs.
Examples
use rug::ops::MulFrom; struct ColumnVec(i32, i32); struct SquareMatrix(ColumnVec, ColumnVec); impl MulFrom<&SquareMatrix> for ColumnVec { fn mul_from(&mut self, lhs: &SquareMatrix) { let SquareMatrix(ref left, ref right) = *lhs; let out_0 = left.0 * self.0 + right.0 * self.1; self.1 = left.1 * self.0 + right.1 * self.1; self.0 = out_0; } } let mut col = ColumnVec(2, 30); let matrix_left = ColumnVec(1, -2); let matrix_right = ColumnVec(3, -1); let matrix = SquareMatrix(matrix_left, matrix_right); // ( 1 3) ( 2) = ( 92) // (−2 −1) (30) (−34) col.mul_from(&matrix); assert_eq!(col.0, 92); assert_eq!(col.1, -34);
Required methods
fn mul_from(&mut self, lhs: Lhs)[src]
Peforms the multiplication.
Examples
use rug::{ops::MulFrom, Integer}; let mut rhs = Integer::from(5); rhs.mul_from(50); // rhs = 50 × 5 assert_eq!(rhs, 250);