1 !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
4 ! Copyright (C) 1995-2004, Scientific Computing Division,
5 ! University Corporation for Atmospheric Research
6 ! Licensed under the GNU General Public License (GPL)
8 ! Authors: Paul N. Swarztrauber and Richard A. Valent
10 ! $Id: rfft1f.f,v 1.2 2004/06/15 21:29:20 rodney Exp $
12 !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
14 SUBROUTINE RFFT1F ( N, INC, R, LENR, WSAVE, LENSAV, &
16 INTEGER N, INC, LENR, LENSAV, LENWRK, IER
17 REAL R(LENR), WSAVE(LENSAV), WORK(LENWRK)
21 IF (LENR .LT. INC*(N-1) + 1) THEN
23 CALL XERFFT ('RFFT1F ', 6)
24 ELSEIF (LENSAV .LT. N + INT(LOG(REAL(N))) +4) THEN
26 CALL XERFFT ('RFFT1F ', 8)
27 ELSEIF (LENWRK .LT. N) THEN
29 CALL XERFFT ('RFFT1F ', 10)
34 CALL RFFTF1 (N,INC,R,WORK,WSAVE,WSAVE(N+1))