| 1 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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| 2 | ! |
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| 3 | ! FFTPACK 5.0 |
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| 4 | ! Copyright (C) 1995-2004, Scientific Computing Division, |
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| 5 | ! University Corporation for Atmospheric Research |
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| 6 | ! Licensed under the GNU General Public License (GPL) |
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| 7 | ! |
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| 8 | ! Authors: Paul N. Swarztrauber and Richard A. Valent |
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| 9 | ! |
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| 10 | ! $Id: rfftmf.f,v 1.2 2004/06/15 21:29:20 rodney Exp $ |
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| 11 | ! |
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| 12 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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| 13 | |
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| 14 | SUBROUTINE RFFTMF (LOT, JUMP, N, INC, R, LENR, WSAVE, LENSAV, & |
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| 15 | & WORK, LENWRK, IER) |
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| 16 | INTEGER LOT, JUMP, N, INC, LENR, LENSAV, LENWRK, IER |
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| 17 | REAL R(LENR), WSAVE(LENSAV), WORK(LENWRK) |
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| 18 | LOGICAL XERCON |
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| 19 | ! |
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| 20 | IER = 0 |
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| 21 | ! |
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| 22 | IF (LENR .LT. (LOT-1)*JUMP + INC*(N-1) + 1) THEN |
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| 23 | IER = 1 |
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| 24 | CALL XERFFT ('RFFTMF ', 6) |
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| 25 | ELSEIF (LENSAV .LT. N + INT(LOG(REAL(N))) +4) THEN |
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| 26 | IER = 2 |
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| 27 | CALL XERFFT ('RFFTMF ', 8) |
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| 28 | ELSEIF (LENWRK .LT. LOT*N) THEN |
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| 29 | IER = 3 |
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| 30 | CALL XERFFT ('RFFTMF ', 10) |
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| 31 | ELSEIF (.NOT. XERCON(INC,JUMP,N,LOT)) THEN |
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| 32 | IER = 4 |
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| 33 | CALL XERFFT ('RFFTMF ', -1) |
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| 34 | ENDIF |
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| 35 | ! |
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| 36 | IF (N .EQ. 1) RETURN |
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| 37 | ! |
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| 38 | CALL MRFTF1 (LOT,JUMP,N,INC,R,WORK,WSAVE,WSAVE(N+1)) |
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| 39 | RETURN |
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| 40 | END |
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