75 lines
2.1 KiB
FortranFixed
75 lines
2.1 KiB
FortranFixed
SUBROUTINE XERBLA_ARRAY(SRNAME_ARRAY, SRNAME_LEN, 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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! September 19, 2006
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!
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IMPLICIT NONE
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! .. Scalar Arguments ..
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INTEGER SRNAME_LEN, INFO
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! ..
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! .. Array Arguments ..
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CHARACTER(1) SRNAME_ARRAY(SRNAME_LEN)
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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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! XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK
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! and BLAS error handler. Rather than taking a Fortran string argument
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! as the function's name, XERBLA_ARRAY takes an array of single
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! characters along with the array's length. XERBLA_ARRAY then copies
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! up to 32 characters of that array into a Fortran string and passes
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! that to XERBLA. If called with a non-positive SRNAME_LEN,
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! XERBLA_ARRAY will call XERBLA with a string of all blank characters.
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!
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! Say some macro or other device makes XERBLA_ARRAY available to C99
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! by a name lapack_xerbla and with a common Fortran calling convention.
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! Then a C99 program could invoke XERBLA via:
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! {
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! int flen = strlen(__func__);
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! lapack_xerbla(__func__, &flen, &info);
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! }
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!
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! Providing XERBLA_ARRAY is not necessary for intercepting LAPACK
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! errors. XERBLA_ARRAY calls XERBLA.
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!
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! Arguments
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! =========
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!
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! SRNAME_ARRAY (input) CHARACTER(1) array, dimension (SRNAME_LEN)
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! The name of the routine which called XERBLA_ARRAY.
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!
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! SRNAME_LEN (input) INTEGER
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! The length of the name in SRNAME_ARRAY.
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!
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! INFO (input) INTEGER
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! The position of the invalid parameter in the parameter list
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! of the calling routine.
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!
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! =====================================================================
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!
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! ..
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! .. Local Scalars ..
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INTEGER I
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! ..
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! .. Local Arrays ..
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CHARACTER(32) SRNAME
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! ..
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! .. Intrinsic Functions ..
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INTRINSIC MIN, LEN
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! ..
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! .. External Functions ..
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EXTERNAL XERBLA
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! ..
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! .. Executable Statements ..
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SRNAME = ''
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DO I = 1, MIN(SRNAME_LEN, LEN(SRNAME))
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SRNAME(I:I) = SRNAME_ARRAY(I)
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END DO
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CALL XERBLA(SRNAME, INFO)
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RETURN
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END
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