1dedccee8SHong Zhang 2dedccee8SHong Zhang /* 3dedccee8SHong Zhang Provides an interface to the FFT packages. 4dedccee8SHong Zhang */ 5dedccee8SHong Zhang 6c6db04a5SJed Brown #include <../src/mat/impls/fft/fft.h> /*I "petscmat.h" I*/ 7dedccee8SHong Zhang 8dedccee8SHong Zhang #undef __FUNCT__ 9dedccee8SHong Zhang #define __FUNCT__ "MatDestroy_FFT" 10dedccee8SHong Zhang PetscErrorCode MatDestroy_FFT(Mat A) 11dedccee8SHong Zhang { 12dedccee8SHong Zhang PetscErrorCode ierr; 13dedccee8SHong Zhang Mat_FFT *fft = (Mat_FFT*)A->data; 14dedccee8SHong Zhang 15dedccee8SHong Zhang PetscFunctionBegin; 16dedccee8SHong Zhang if (fft->matdestroy) { 17dedccee8SHong Zhang ierr = (fft->matdestroy)(A);CHKERRQ(ierr); 18dedccee8SHong Zhang } 19dedccee8SHong Zhang ierr = PetscFree(fft->dim);CHKERRQ(ierr); 20bf0cc555SLisandro Dalcin ierr = PetscFree(A->data);CHKERRQ(ierr); 21dedccee8SHong Zhang ierr = PetscObjectChangeTypeName((PetscObject)A,0);CHKERRQ(ierr); 22dedccee8SHong Zhang PetscFunctionReturn(0); 23dedccee8SHong Zhang } 24dedccee8SHong Zhang 25dedccee8SHong Zhang #undef __FUNCT__ 26dedccee8SHong Zhang #define __FUNCT__ "MatCreateFFT" 27dedccee8SHong Zhang /*@ 28dedccee8SHong Zhang MatCreateFFT - Creates a matrix object that provides FFT via an external package 29dedccee8SHong Zhang 30dedccee8SHong Zhang Collective on MPI_Comm 31dedccee8SHong Zhang 32dedccee8SHong Zhang Input Parameter: 33dedccee8SHong Zhang + comm - MPI communicator 34dedccee8SHong Zhang . ndim - the ndim-dimensional transform 35dedccee8SHong Zhang . dim - array of size ndim, dim[i] contains the vector length in the i-dimension 36dedccee8SHong Zhang - type - package type, e.g., FFTW or FFTCU 37dedccee8SHong Zhang 38dedccee8SHong Zhang Output Parameter: 39dedccee8SHong Zhang . A - the matrix 40dedccee8SHong Zhang 41dedccee8SHong Zhang Options Database Keys: 42dedccee8SHong Zhang + -mat_fft_type - set FFT type 43dedccee8SHong Zhang 44dedccee8SHong Zhang Level: intermediate 45dedccee8SHong Zhang 46dedccee8SHong Zhang @*/ 4719fd82e9SBarry Smith PetscErrorCode MatCreateFFT(MPI_Comm comm,PetscInt ndim,const PetscInt dim[],MatType mattype,Mat *A) 48dedccee8SHong Zhang { 49dedccee8SHong Zhang PetscErrorCode ierr; 50dedccee8SHong Zhang PetscMPIInt size; 51dedccee8SHong Zhang Mat FFT; 52dedccee8SHong Zhang PetscInt N,i; 53dedccee8SHong Zhang Mat_FFT *fft; 54dedccee8SHong Zhang 55dedccee8SHong Zhang PetscFunctionBegin; 56dedccee8SHong Zhang if (ndim < 1) SETERRQ1(comm,PETSC_ERR_USER,"ndim %d must be > 0",ndim); 57dedccee8SHong Zhang ierr = MPI_Comm_size(comm, &size);CHKERRQ(ierr); 58dedccee8SHong Zhang 59dedccee8SHong Zhang ierr = MatCreate(comm,&FFT);CHKERRQ(ierr); 60*b00a9115SJed Brown ierr = PetscNewLog(FFT,&fft);CHKERRQ(ierr); 61dedccee8SHong Zhang FFT->data = (void*)fft; 62dedccee8SHong Zhang N = 1; 63dedccee8SHong Zhang for (i=0; i<ndim; i++) { 64dedccee8SHong Zhang if (dim[i] < 1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"dim[%d]=%d must be > 0",i,dim[i]); 65dedccee8SHong Zhang N *= dim[i]; 66dedccee8SHong Zhang } 67dedccee8SHong Zhang 68785e854fSJed Brown ierr = PetscMalloc1(ndim,&fft->dim);CHKERRQ(ierr); 69dedccee8SHong Zhang ierr = PetscMemcpy(fft->dim,dim,ndim*sizeof(PetscInt));CHKERRQ(ierr); 70dedccee8SHong Zhang 71dedccee8SHong Zhang fft->ndim = ndim; 72dedccee8SHong Zhang fft->n = PETSC_DECIDE; 73dedccee8SHong Zhang fft->N = N; 740298fd71SBarry Smith fft->data = NULL; 75dedccee8SHong Zhang 76dedccee8SHong Zhang ierr = MatSetType(FFT,mattype);CHKERRQ(ierr); 7726fbe8dcSKarl Rupp 78dedccee8SHong Zhang FFT->ops->destroy = MatDestroy_FFT; 79dedccee8SHong Zhang 80dedccee8SHong Zhang /* get runtime options */ 81ce94432eSBarry Smith ierr = PetscOptionsBegin(PetscObjectComm((PetscObject)FFT),((PetscObject)FFT)->prefix,"FFT Options","Mat");CHKERRQ(ierr); 82dedccee8SHong Zhang PetscOptionsEnd(); 83dedccee8SHong Zhang 84dedccee8SHong Zhang *A = FFT; 85dedccee8SHong Zhang PetscFunctionReturn(0); 86dedccee8SHong Zhang } 87