Subroutine qawo is designed for integrands with an oscillatory factor,. More...

Detailed Description

Subroutine qawo is designed for integrands with an oscillatory factor,.

$I= \int_{a}^{b} f(x) W(x) dx$

where $W(x) = \sin(\omega x)$ or $W(x) = \cos(\omega x)$ .

Parameters

[in]	f	The function to integrate
[in]	a	(real) lower limit of integration
[in]	b	(real) upper limit of integration
[in]	omega	(real) factor in the weight function
[in]	flgw	(integer) flag indicating if weight is cosine (flgw=1)
[in]	args	(real, array, optional) extra arguments (if needed) to be passed to the function `f`
[out]	IntVal	(same kind as `f`) Approximation to integral
[in]	epsabs	(real, optional) Absolute accuracy requested. Default = 1.e-7
[in]	epsrel	(real, optional) Relative accuracy requested. Default = 1.e-5
[out]	abserr	(real, optional) Estimation of absolute error achieved
[out]	neval	(integer, optional) Number of function evaluations performed
[out]	ier	(integer, optional) Error code
[in,out]	info	(optional) Information and workspace. Must be of type d_qp_extra for integration of real functions and of type c_qp_extra for integration of complex functions

Note: An automatic subdivision of the interval is preformed and results are extrapolated using the epsilon-algorithm to accelerate the convergence of the integral.

The documentation for this interface was generated from the following file: