Expand description
Dynamically constructed expressions.
These expressions offer the greatest flexibility in how they can be constructed at runtime. Forward and reverse automatic differentiation techniques have been implemented for calculating expression first and second derivatives. They are however much slower than the more direct fixed expression types (in fixed module) which allow for greater compiler optimisation of the derivative calculations.
Examples
See Expr for more details.
use descent::expr::{Var, Par};
use descent::expr::dynam::NumOps; // required to bring in powi usage
let x = Var(0);
let y = Var(1);
let p = Par(0);
let e = p * x - (5.0 * y.powi(2) + 4.0);Structs
An expression that can be dynamically constructed.
Snapshot of a dynamically constructed expression
Expr.Sparsity and other information about an
Expr for guiding AD process.Workspace used for performing expression AD.
Traits
Trait for using numeric operators such as
.powi(i32), .cos(), .sin()
in dynamic expressions.Type Definitions
Represents the sum of multiple dynamic expressions.