Intel® Math Kernel Library 2019 Developer Reference - C
All numerical types in this section are either standard C types float and double or MKL_INT integer type. For more information on the C types, refer to C Datatypes Specific to Intel MKL and the Intel® MKL Developer Guide. To better understand usage of the types, see examples in the examples\pdepoissonc\source folder in your Intel MKL directory.
All Poisson Solver routines use parameters for passing various options to the routines. These parameters are arrays ipar, dpar, and spar. Values for these parameters should be specified very carefully (see Common Parameters). You can change these values during computations to meet your needs. For more details, see the descriptions of specific routines.
To avoid failure or incorrect results, you must provide correct and consistent parameters to the routines.
Poisson Solver routines take arrays of user data as input. For example, the d_Helmholtz_3D routine takes user arrays to compute an approximate solution to the 3D Helmholtz problem. To minimize storage requirements and improve the overall run-time efficiency, Intel MKL Poisson Solver routines do not make copies of user input arrays.
If you need a copy of your input data arrays, you must save them yourself.
For better performance, align your data arrays as recommended in the Intel MKL Developer Guide (search the document for coding techniques to improve performance).