| 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: xerfft.f,v 1.3 2004/07/06 00:58:41 rodney Exp $ |
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| 11 | ! |
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| 12 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
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| 13 | |
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| 14 | SUBROUTINE XERFFT( SRNAME, INFO) |
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| 15 | ! |
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| 16 | ! .. Scalar Arguments .. |
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| 17 | CHARACTER*6 SRNAME |
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| 18 | INTEGER INFO |
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| 19 | ! |
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| 20 | ! .. |
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| 21 | ! |
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| 22 | ! Purpose |
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| 23 | ! ======= |
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| 24 | ! |
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| 25 | ! XERFFT is an error handler for library FFTPACK version 5.0 routines. |
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| 26 | ! It is called by an FFTPACK 5.0 routine if an input parameter has an |
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| 27 | ! invalid value. A message is printed and execution stops. |
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| 28 | ! |
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| 29 | ! Installers may consider modifying the STOP statement in order to |
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| 30 | ! call system-specific exception-handling facilities. |
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| 31 | ! |
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| 32 | ! Arguments |
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| 33 | ! ========= |
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| 34 | ! |
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| 35 | ! SRNAME (input) CHARACTER*6 |
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| 36 | ! The name of the routine which called XERFFT. |
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| 37 | ! |
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| 38 | ! INFO (input) INTEGER |
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| 39 | ! When a single invalid parameter in the parameter list of |
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| 40 | ! the calling routine has been detected, INFO is the position |
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| 41 | ! of that parameter. In the case when an illegal combination |
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| 42 | ! of LOT, JUMP, N, and INC has been detected, the calling |
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| 43 | ! subprogram calls XERFFT with INFO = -1. |
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| 44 | ! |
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| 45 | ! ===================================================================== |
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| 46 | ! |
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| 47 | ! .. Executable Statements .. |
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| 48 | ! |
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| 49 | IF (INFO .GE. 1) THEN |
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| 50 | WRITE( *, '(A,A,A,I3,A)') ' ** On entry to ', SRNAME, & |
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| 51 | & ' parameter number ', INFO, ' had an illegal value' |
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| 52 | ELSEIF (INFO .EQ. -1) THEN |
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| 53 | WRITE( *, '(A,A,A,A)') ' ** On entry to ', SRNAME, & |
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| 54 | & ' parameters LOT, JUMP, N and INC are inconsistent' |
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| 55 | ELSEIF (INFO .EQ. -2) THEN |
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| 56 | WRITE( *, '(A,A,A,A)') ' ** On entry to ', SRNAME, & |
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| 57 | & ' parameter L is greater than LDIM' |
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| 58 | ELSEIF (INFO .EQ. -3) THEN |
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| 59 | WRITE( *, '(A,A,A,A)') ' ** On entry to ', SRNAME, & |
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| 60 | & ' parameter M is greater than MDIM' |
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| 61 | ELSEIF (INFO .EQ. -5) THEN |
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| 62 | WRITE( *, '(A,A,A,A)') ' ** Within ', SRNAME, & |
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| 63 | & ' input error returned by lower level routine' |
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| 64 | ELSEIF (INFO .EQ. -6) THEN |
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| 65 | WRITE( *, '(A,A,A,A)') ' ** On entry to ', SRNAME, & |
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| 66 | & ' parameter LDIM is less than 2*(L/2+1)' |
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| 67 | ENDIF |
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| 68 | ! |
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| 69 | STOP |
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| 70 | ! |
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| 71 | ! End of XERFFT |
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| 72 | ! |
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| 73 | END |
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