Displaying 2 results from an estimated 2 matches for "dqawo".
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dqawoe
2001 Jul 12
1
more subroutines for integrate()
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 pi...
2011 Apr 25
1
R equivalent to (D)QDAWO in Fortran?
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