1 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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2 | ! |
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3 | ! FFTPACK 5.0 |
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4 | ! |
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5 | ! Authors: Paul N. Swarztrauber and Richard A. Valent |
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6 | ! |
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7 | ! $Id: cfftmb.f,v 1.2 2004/06/15 21:08:32 rodney Exp $ |
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8 | ! |
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9 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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10 | |
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11 | SUBROUTINE CFFTMB (LOT, JUMP, N, INC, C, LENC, WSAVE, LENSAV, & |
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12 | & WORK, LENWRK, IER) |
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13 | INTEGER LOT, JUMP, N, INC, LENC, LENSAV, LENWRK, IER |
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14 | COMPLEX C(LENC) |
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15 | REAL WSAVE(LENSAV) ,WORK(LENWRK) |
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16 | LOGICAL XERCON |
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17 | ! |
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18 | IER = 0 |
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19 | ! |
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20 | IF (LENC .LT. (LOT-1)*JUMP + INC*(N-1) + 1) THEN |
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21 | IER = 1 |
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22 | CALL XERFFT ('CFFTMB ', 6) |
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23 | ELSEIF (LENSAV .LT. 2*N + INT(LOG(REAL(N))) + 4) THEN |
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24 | IER = 2 |
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25 | CALL XERFFT ('CFFTMB ', 8) |
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26 | ELSEIF (LENWRK .LT. 2*LOT*N) THEN |
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27 | IER = 3 |
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28 | CALL XERFFT ('CFFTMB ', 10) |
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29 | ELSEIF (.NOT. XERCON(INC,JUMP,N,LOT)) THEN |
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30 | IER = 4 |
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31 | CALL XERFFT ('CFFTMB ', -1) |
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32 | ENDIF |
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33 | ! |
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34 | IF (N .EQ. 1) RETURN |
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35 | ! |
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36 | IW1 = N+N+1 |
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37 | CALL CMFM1B (LOT,JUMP,N,INC,C,WORK,WSAVE,WSAVE(IW1), & |
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38 | & WSAVE(IW1+1)) |
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39 | RETURN |
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40 | END |
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