petsc-dev 2014-07-22
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PetscDTGaussQuadrature

create Gauss quadrature

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTGaussQuadrature(PetscInt npoints,PetscReal a,PetscReal b,PetscReal *x,PetscReal *w)
Not Collective

Input Arguments

npoints - number of points
a - left end of interval (often-1)
b - right end of interval (often +1)

Output Arguments

x - quadrature points
w - quadrature weights

References

Golub and Welsch, Calculation of Quadrature Rules, Math. Comp. 23(106), 221--230, 1969.

See Also

PetscDTLegendreEval()

Level:intermediate
Location:
src/dm/dt/interface/dt.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages