topic Numerical integration package in MKL in Intel® oneAPI Math Kernel Library

Numerical integration package in MKL

Byungmoon_C_ — Wed, 04 Mar 2015 18:20:01 GMT

Hi,

I have "old" codes that call Fortran numerical_libraries routine GQRUL and DGQRUL for calculating Gauss-Legendre quadrature rule to perform numerical integration. I used to be able to just put a line in the main routine "USE numerical_libraries" and subsequently was able to call GQRUL and DGQRUL functions.

Currently, I have Intel® Parallel Studio XE Composer Edition for Fortran with Rogue Wave IMSL 7.0 for Windows*.

I have been trying to compile the old codes with routines from Numerical_libraries but I get the feeling that MKL that I have doesn't have GQRUL routine or in fact any kind of extensive array of routines for numerical integration that were in numerical_library.

Am I correct? I really need to use Gauss-Legendre quadrature rule routine; how do I go about this?

Thanks,

Byung

The routines that you are

mecej4 — Wed, 04 Mar 2015 19:26:00 GMT

The routines that you are looking for are in the IMSL libraries, not in MKL. Likewise, "Use Numerical_Libraries" pertains to IMSL and not MKL. Specifically, that USE statement is appropriate if you are calling the IMSL routines using the F77 interface. If you are using the F95/F2003 interfaces, you may either USE the specific modules for GQRUL and GQRCF, or you can insert USE IMSL_LIBRARIES.

For this to work, there are steps that you need to take to make the IMSL libraries available in your Visual Studio projects. See https://software.intel.com/en-us/articles/installing-and-using-the-imsl-libraries.

If you are using the command line environment, the /Qimsl flag of the Intel Fortran compiler may suffice, or you can use the various IMSL related flags such as FFLAGS, LINK_FNL, etc.

Have you tried building and running the example code given in the IMSL manual under GQRUL?