search for: dqawoe

I was pleased to find integrate() using the quadpack routines "dqags" and "dqagi". However, I would also like to have the routine "dqawoe" included. This routine is summarized as follows... c***keywords automatic integrator, special-purpose, c integrand with oscillatory cos or sin factor, c clenshaw-curtis method, (end point) singularities, c extrapolation, globally adaptive c***author pie...

Hi useRs, I have a set of fortran code that was passed down from previous students, and I am converting its algorithm into R codes. I encounter this function in Fortran (D)QDAWO, which numerically integrates a function f with a user-specified cosine or sine weight. It is used because the original function that I want to integrate is f(x)*cos(x). I tried in R to directly integrate by