Utils Class
Utilities for modeling.
Inheritance Hierarchy
Namespace: Optimizer.Objects
Assembly: xprsdn (in xprsdn.dll) Version: 44.01.04
Syntax
C#
public abstract class Utils
The Utils type exposes the following members.
Constructors
Methods
| Name | Description | |
|---|---|---|
  |
Abs |
Create an expression for
Abs(value).
|
|
Arccos |
Create an expression for
Arccos(value).
|
|
Arcsin |
Create an expression for
Arcsin(value).
|
|
Arctan |
Create an expression for
Arctan(value).
|
|
Cos |
Create an expression for
Cos(value).
|
|
Div(Double, Expression) |
Create an expression for
dividend + divisor. This is equivalent to
new ConstantExpression(dividend).Div(divisor) and is only provided for completeness.
|
|
Div(Expression, Expression) |
Create an expression for
dividend / divisor. This is equivalent to
dividend.Div(divisor) and is only provided for completeness.
|
|
Div(Expression, Double) |
Create an expression for
dividend + divisor. This is equivalent to
dividend.Div(divisor) and is only provided for completeness.
|
|
Equals | (Inherited from Object.) |
|
Exp |
Create an expression for
Exp(value).
|
 |
Finalize |
Allows an
Object to attempt to free resources and perform other cleanup operations before the
Object is reclaimed by garbage collection.
(Inherited from Object.) |
|
GetHashCode |
Serves as a hash function for a particular type.
(Inherited from Object.) |
|
GetType |
Gets the
Type of the current instance.
(Inherited from Object.) |
|
Ln |
Create an expression for
Ln(value).
|
|
Log10 |
Create an expression for
Log10(value).
|
|
Max |
Create an expression for
Max(value, ...). Consider also using
Variable.maxOf.
|
|
MemberwiseClone |
Creates a shallow copy of the current
Object.
(Inherited from Object.) |
|
Min |
Create an expression for
Min(value, ...). Consider also using
Variable.MinOf(...).
|
|
Minus(Double, Expression) |
Create an expression for
minuend + subtrahend. This is equivalent to
new ConstantExpression(minuend).Minus(subtrahend) and is only provided for completeness.
|
|
Minus(Expression, Expression) |
Create an expression for
minuend - subtrahend. This is equivalent to
minuend.Minus(subtrahend) and is only provided for completeness.
|
|
Minus(Expression, Double) |
Create an expression for
minuend + subtrahend. This is equivalent to
minuend.Minus(subtrahend) and is only provided for completeness.
|
|
Mul(Double, Expression) |
Create an expression for
factor1 + factor2. This is equivalent to
new ConstantExpression(factor1).Mul(factor2) and is only provided for completeness.
|
|
Mul(Expression, Expression) |
Create an expression for
factor1 * factor2. This is equivalent to
factor1.Mul(factor2) and is only provided for completeness.
|
|
Mul(Expression, Double) |
Create an expression for
factor1 + factor2. This is equivalent to
factor1.Mul(factor2) and is only provided for completeness.
|
|
Plus(Double, Expression) |
Create an expression for
augend + addend. This is equivalent to
new ConstantExpression(augend).Plus(addend) and is only provided for completeness.
|
|
Plus(Expression, Expression) |
Create an expression for
augend + addend. This is equivalent to
augend.Plus(addend) and is only provided for completeness.
|
|
Plus(Expression, Double) |
Create an expression for
augend + addend. This is equivalent to
augend.Plus(addend) and is only provided for completeness.
|
|
Pow(Double, Expression) |
Create an expression for
base ^ exp. Note that adding the result of
pow to your model in any way will turn the model into a non-linear model. In order to square a variable or linear expression, use one of Variable.Square(), LinTerm.Square(), or LinExpression.Square(). They all create linear or quadratic expressions.
|
|
Pow(Expression, Expression) |
Create an expression for
base ^ exp. Note that adding the result of
pow to your model in any way will turn the model into a non-linear model. In order to square a variable or linear expression, use one of Variable.Square(), LinTerm.Square(), or LinExpression.Square(). They all create linear or quadratic expressions.
|
|
Pow(Expression, Double) |
Create an expression for
base ^ exp. Note that adding the result of
pow to your model in any way will turn the model into a non-linear model. In order to square a variable or linear expression, use one of Variable.Square(), LinTerm.Square(), or LinExpression.Square(). They all create linear or quadratic expressions.
|
|
Prod |
Create an expression for
Prod(value, ...).
|
|
ScalarProduct(IEnumerable<Variable>, IEnumerable<Double>) |
Compute the scalar product between a vector of variables and a vector of coefficients. Both vectors are specified as streams of elements.
|
|
ScalarProduct(IEnumerable<Variable>, IEnumerable<Variable>, IEnumerable<Double>) |
Compute the elementwise product between two vectors of variables and a vector of coefficients. All vectors are specified as streams of elements.
|
|
ScalarProduct<K>(IDictionary<K, Variable>, IDictionary<K, Double>) |
Compute the scalar product between a map of variables and a map of coefficients. The function assumes that
variables and
coefs have the same Keys (missing keys in
coefs are treated as zero) and creates a new linear expression by iterating over the keys in
variables and adding up the variable/coefficient pair for each key.
|
|
Sign |
Create an expression for
Sign(value).
|
|
Sin |
Create an expression for
Sin(value).
|
|
Sqrt |
Create an expression for
Sqrt(value).
|
|
Sum(Expression, Expression) |
Create an expression from an array of other expressions. Note that the other expressions are copied by reference, so changing them later will affect the returned expression.
|
|
Sum<T>(IEnumerable<T>) |
Create an expression from a stream of other expressions. Note that the other expressions are copied by reference, so changing them later will affect the returned expression.
|
|
Sum<A>(Int32, Func<Int32, A>) |
Create a sum of expressions. Note that the terms are captured by reference, i.e., changing those terms later will affect the return sum.
|
|
Sum<T, A>(IEnumerable<T>, Func<T, A>) |
Create a sum of expressions. Note that the terms are captured by reference, i.e., changing those terms later will affect the return sum.
|
|
Tan |
Create an expression for
Tan(value).
|
|
ToString | (Inherited from Object.) |
|
Uminus |
Create an expression for
-value.
|
See Also
Reference
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