// Disp defaults to off, init value defaults to zero
// Defaults to NaN so that we evaluate at the initial point
// unless set otherwise
// TODO: Make a Reset() function
// TODO: Add in other defaults
func NewGradient() *Gradient {
g := &Gradient{
Floats: NewFloat("Grad", true),
Abs: status.NewAbs(status.DefaultGradAbsTol, status.GradAbsTol),
Rel: status.NewRel(0, status.GradRelTol),
}
return g
}
// NewObjective returns the default objective structure
func NewObjective() *Objective {
o := &Objective{
delta: math.NaN(),
Float: NewFloat("Obj", true),
Abs: status.NewAbs(math.Inf(-1), status.ObjAbsTol),
Rel: status.NewRel(0, status.ObjRelTol),
}
return o
}
func NewBoundedStep() *BoundedStep {
b := &BoundedStep{
Float: NewFloat("step", false),
Abs: status.NewAbs(status.DefaultStepAbsTol, status.StepAbsTol),
lb: 0,
ub: math.Inf(1),
}
b.SetInit(1)
return b
}