tri3.f
SUBROUTINE TRI3 (M, A, B, C, K, Y1, Y2, Y3, TCOS, D, W1, W2, W3)
C***BEGIN PROLOGUE TRI3
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Warning: this routine is not intended to be user-callable.
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C***SUBSIDIARY
C***PURPOSE Subsidiary to GENBUN
C***LIBRARY SLATEC
C***TYPE SINGLE PRECISION (TRI3-S, CMPTR3-C)
C***AUTHOR (UNKNOWN)
C***DESCRIPTION
C
C Subroutine to solve three linear systems whose common coefficient
C matrix is a rational function in the matrix given by
C
C TRIDIAGONAL (...,A(I),B(I),C(I),...)
C
C***SEE ALSO GENBUN
C***ROUTINES CALLED (NONE)
C***REVISION HISTORY (YYMMDD)
C 801001 DATE WRITTEN
C 890206 REVISION DATE from Version 3.2
C 891214 Prologue converted to Version 4.0 format. (BAB)
C 900402 Added TYPE section. (WRB)
C***END PROLOGUE TRI3