| 1 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
|---|
| 2 | ! |
|---|
| 3 | ! FFTPACK 5.0 |
|---|
| 4 | ! Copyright (C) 1995-2004, Scientific Computing Division, |
|---|
| 5 | ! University Corporation for Atmospheric Research |
|---|
| 6 | ! Licensed under the GNU General Public License (GPL) |
|---|
| 7 | ! |
|---|
| 8 | ! Authors: Paul N. Swarztrauber and Richard A. Valent |
|---|
| 9 | ! |
|---|
| 10 | ! $Id: sint1b.f,v 1.2 2004/06/15 21:29:20 rodney Exp $ |
|---|
| 11 | ! |
|---|
| 12 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
|---|
| 13 | |
|---|
| 14 | SUBROUTINE SINT1B ( N, INC, X, LENX, WSAVE, LENSAV, & |
|---|
| 15 | & WORK, LENWRK, IER) |
|---|
| 16 | INTEGER N, INC, LENX, LENSAV, LENWRK, IER |
|---|
| 17 | REAL X(INC,*), WSAVE(LENSAV), WORK(LENWRK) |
|---|
| 18 | ! |
|---|
| 19 | IER = 0 |
|---|
| 20 | ! |
|---|
| 21 | IF (LENX .LT. INC*(N-1) + 1) THEN |
|---|
| 22 | IER = 1 |
|---|
| 23 | CALL XERFFT ('SINT1B', 6) |
|---|
| 24 | GO TO 100 |
|---|
| 25 | ELSEIF (LENSAV .LT. N/2 + N + INT(LOG(REAL(N))) +4) THEN |
|---|
| 26 | IER = 2 |
|---|
| 27 | CALL XERFFT ('SINT1B', 8) |
|---|
| 28 | GO TO 100 |
|---|
| 29 | ELSEIF (LENWRK .LT. (2*N+2)) THEN |
|---|
| 30 | IER = 3 |
|---|
| 31 | CALL XERFFT ('SINT1B', 10) |
|---|
| 32 | GO TO 100 |
|---|
| 33 | ENDIF |
|---|
| 34 | ! |
|---|
| 35 | CALL SINTB1(N,INC,X,WSAVE,WORK,WORK(N+2),IER1) |
|---|
| 36 | IF (IER1 .NE. 0) THEN |
|---|
| 37 | IER = 20 |
|---|
| 38 | CALL XERFFT ('SINT1B',-5) |
|---|
| 39 | ENDIF |
|---|
| 40 | ! |
|---|
| 41 | 100 CONTINUE |
|---|
| 42 | RETURN |
|---|
| 43 | END |
|---|
