foreng_numeric_calculus Module

Contents

Functions

calc_derivative

Functions

public function calc_derivative(func, x_0, dx) result(dydx)

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=real64),			external	::	func	Ptr to an external function
real(kind=real64),	intent(in)			::	x_0	Value at which to calculate the derivative
real(kind=real64),		optional		::	dx	Optional step size. If not present, defaults to $10^{-100}$

Return Value real(kind=real64)

$\frac{dy}{dx}$ at $x = x_0$