Find the closest passing value to the decision boundary of predicate

Missing bounds are inferred. Use NULL for either element of bounds to conduct a one-sided search, or omit bounds to conduct an exponential search.

Usage

binary_search(predicate, bounds = NULL, .T = NULL, return_sign = FALSE)

Arguments

predicate

a monotonic unary function from a number to a boolean

bounds

a two-element list of optional lower and upper bounds on the input of predicate; use NULL for either bound to infer it

.T

type of argument to predicate, one of float or int; when set, takes precedence over the type inferred from bounds

return_sign

if True, also return the direction away from the decision boundary

Value

the discovered parameter within the bounds

Examples

binary_search(\(x) x <= -5L, bounds = list(-10L, NULL))
#> Error: "internal___binary_search" not available for .Call() for package "opendp"