dgtsl.f90 File Reference

Solver for tridiagonal SLAE. More...

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Functions/Subroutines
subroutine	dgtsl (n, c, d, e, b, info)

Detailed Description

Solver for tridiagonal SLAE.

Solves tridiagonal system of linear algebraic equations. FORTRAN90 version by John Burkardt. Originally from LINPACK.

Definition in file dgtsl.f90.

Function/Subroutine Documentation

dgtsl()

subroutine dgtsl	(	integer ( kind = 4 )	n,
		real ( kind = 8 ), dimension(n)	c,
		real ( kind = 8 ), dimension(n)	d,
		real ( kind = 8 ), dimension(n)	e,
		real ( kind = 8 ), dimension(n)	b,
		integer ( kind = 4 )	info
	)

Parameters

n	order of the tridiagonal matrix
b	On input, the right hand side. On output, the solution.
c	contains the subdiagonal of the tridiagonal matrix in entries C(2:N). On output, C is destroyed.
d	On input, the diagonal of the matrix. On output, D is destroyed.
e	contains the superdiagonal of the tridiagonal matrix in entries E(1:N-1). On output E is destroyed.
info	error flag

Definition at line 8 of file dgtsl.f90.

Referenced by integration::bblpreproc().