Search Results for "fourier"

FFTW++ is a C++ header class for the FFTW Fast Fourier Transform library that automates memory allocation, alignment, planning, wisdom, and communication on both serial and parallel (OpenMP/MPI) architectures. In 2D and 3D, hybrid dealiasing of convolutions substantially reduces memory usage and computation time. Wrappers for C, Python, and Fortran are included.

libdspl-2.0 — opensource cross-platform digital signal processing algorithm library, written in C language. Distributed under LGPL v3 license. This allows to use this library in all applications with dynamic linking.

Program for viewing, editing, manipulating, and analyzing absorbance spectra. Simple arithnetic includes making linear combinatins of up to 10 spectra. Advanced functions include fitting spectra as LC of standard basis spectra, singular value decomposition, Fourier transform, differentiation, integration, global fitting of 3D titration and kinetic data. Graphics features allow composing Figures and export to postscript files which can be converted to pdf, imported into photoshop...

The code implements Muskhelishvili's complex function approach to calculate 2D stress intensity factors (modes I+II) from crack tip displacement fields. Surface displacements can be used with a plane stress elastic model. The code uses power/Fourier series expansion and a conformal mapping of an ellipse onto a circle.

A low memory scaling distributed 3D FFT library. The library is designed for calculating complex‐to‐complex Fast Fourier Transforms (FFT’s) on 3‐D distributed data. It is based on FORTRAN90 and MPI with the underlying FFT calculated using FFTW3.

FGH is program that solves vibrational Schroedinger equation using the Fourier grid hamiltonian method. The program requires potential energy surface and G-matrix defined at the uniform grid of points.

A FOTRAN 90 Numerical library (AFNL) is a set of MODULES containing definitions of Fourier series and polynomials, and able to perform linear (multi-)dimensional fittings, integrals, sorting data, compute roots of functions, and other numerical tasks.