89 lines
2.6 KiB
FortranFixed
89 lines
2.6 KiB
FortranFixed
SUBROUTINE XERBLA( SRNAME, INFO )
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*
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* -- LAPACK auxiliary routine (version 3.1) --
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* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
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* November 2006
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*
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* .. Scalar Arguments ..
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CHARACTER*(*) SRNAME
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INTEGER INFO
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* ..
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*
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* Purpose
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* =======
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*
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* This is a special version of XERBLA to be used only as part of
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* the test program for testing error exits from the LAPACK routines.
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* Error messages are printed if INFO.NE.INFOT or if SRNAME.NE.SRNAMT,
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* where INFOT and SRNAMT are values stored in COMMON.
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*
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* Arguments
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* =========
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*
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* SRNAME (input) CHARACTER*(*)
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* The name of the subroutine calling XERBLA. This name should
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* match the COMMON variable SRNAMT.
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*
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* INFO (input) INTEGER
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* The error return code from the calling subroutine. INFO
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* should equal the COMMON variable INFOT.
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*
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* Further Details
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* ======= =======
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*
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* The following variables are passed via the common blocks INFOC and
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* SRNAMC:
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*
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* INFOT INTEGER Expected integer return code
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* NOUT INTEGER Unit number for printing error messages
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* OK LOGICAL Set to .TRUE. if INFO = INFOT and
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* SRNAME = SRNAMT, otherwise set to .FALSE.
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* LERR LOGICAL Set to .TRUE., indicating that XERBLA was called
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* SRNAMT CHARACTER*(*) Expected name of calling subroutine
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*
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*
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* .. Scalars in Common ..
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LOGICAL LERR, OK
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CHARACTER(32) SRNAMT
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INTEGER INFOT, NOUT
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* ..
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* .. External Functions ..
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INTEGER ILA_LEN_TRIM
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EXTERNAL ILA_LEN_TRIM
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* ..
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* .. Common blocks ..
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COMMON / INFOC / INFOT, NOUT, OK, LERR
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Executable Statements ..
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*
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LERR = .TRUE.
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IF( INFO.NE.INFOT ) THEN
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IF( INFOT.NE.0 ) THEN
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WRITE( NOUT, FMT = 9999 )
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$ SRNAMT(1:ILA_LEN_TRIM(SRNAMT)), INFO, INFOT
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ELSE
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WRITE( NOUT, FMT = 9997 )
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$ SRNAME(1:ILA_LEN_TRIM(SRNAME)), INFO
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END IF
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OK = .FALSE.
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END IF
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IF( SRNAME.NE.SRNAMT ) THEN
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WRITE( NOUT, FMT = 9998 )
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$ SRNAME(1:ILA_LEN_TRIM(SRNAME)),
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$ SRNAMT(1:ILA_LEN_TRIM(SRNAMT))
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OK = .FALSE.
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END IF
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RETURN
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*
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9999 FORMAT( ' *** XERBLA was called from ', A, ' with INFO = ', I6,
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$ ' instead of ', I2, ' ***' )
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9998 FORMAT( ' *** XERBLA was called with SRNAME = ', A,
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$ ' instead of ', A6, ' ***' )
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9997 FORMAT( ' *** On entry to ', A, ' parameter number ', I6,
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$ ' had an illegal value ***' )
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*
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* End of XERBLA
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*
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END
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