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xerbla_array.f 3.6 kB

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  1. *> \brief \b XERBLA_ARRAY
  2. *
  3. * =========== DOCUMENTATION ===========
  4. *
  5. * Online html documentation available at
  6. * http://www.netlib.org/lapack/explore-html/
  7. *
  8. *> \htmlonly
  9. *> Download XERBLA_ARRAY + dependencies
  10. *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/xerbla_array.f">
  11. *> [TGZ]</a>
  12. *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/xerbla_array.f">
  13. *> [ZIP]</a>
  14. *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/xerbla_array.f">
  15. *> [TXT]</a>
  16. *> \endhtmlonly
  17. *
  18. * Definition:
  19. * ===========
  20. *
  21. * SUBROUTINE XERBLA_ARRAY( SRNAME_ARRAY, SRNAME_LEN, INFO)
  22. *
  23. * .. Scalar Arguments ..
  24. * INTEGER SRNAME_LEN, INFO
  25. * ..
  26. * .. Array Arguments ..
  27. * CHARACTER(1) SRNAME_ARRAY(SRNAME_LEN)
  28. * ..
  29. *
  30. *
  31. *> \par Purpose:
  32. * =============
  33. *>
  34. *> \verbatim
  35. *>
  36. *> XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK
  37. *> and BLAS error handler. Rather than taking a Fortran string argument
  38. *> as the function's name, XERBLA_ARRAY takes an array of single
  39. *> characters along with the array's length. XERBLA_ARRAY then copies
  40. *> up to 32 characters of that array into a Fortran string and passes
  41. *> that to XERBLA. If called with a non-positive SRNAME_LEN,
  42. *> XERBLA_ARRAY will call XERBLA with a string of all blank characters.
  43. *>
  44. *> Say some macro or other device makes XERBLA_ARRAY available to C99
  45. *> by a name lapack_xerbla and with a common Fortran calling convention.
  46. *> Then a C99 program could invoke XERBLA via:
  47. *> {
  48. *> int flen = strlen(__func__);
  49. *> lapack_xerbla(__func__, &flen, &info);
  50. *> }
  51. *>
  52. *> Providing XERBLA_ARRAY is not necessary for intercepting LAPACK
  53. *> errors. XERBLA_ARRAY calls XERBLA.
  54. *> \endverbatim
  55. *
  56. * Arguments:
  57. * ==========
  58. *
  59. *> \param[in] SRNAME_ARRAY
  60. *> \verbatim
  61. *> SRNAME_ARRAY is CHARACTER(1) array, dimension (SRNAME_LEN)
  62. *> The name of the routine which called XERBLA_ARRAY.
  63. *> \endverbatim
  64. *>
  65. *> \param[in] SRNAME_LEN
  66. *> \verbatim
  67. *> SRNAME_LEN is INTEGER
  68. *> The length of the name in SRNAME_ARRAY.
  69. *> \endverbatim
  70. *>
  71. *> \param[in] INFO
  72. *> \verbatim
  73. *> INFO is INTEGER
  74. *> The position of the invalid parameter in the parameter list
  75. *> of the calling routine.
  76. *> \endverbatim
  77. *
  78. * Authors:
  79. * ========
  80. *
  81. *> \author Univ. of Tennessee
  82. *> \author Univ. of California Berkeley
  83. *> \author Univ. of Colorado Denver
  84. *> \author NAG Ltd.
  85. *
  86. *> \ingroup OTHERauxiliary
  87. *
  88. * =====================================================================
  89. SUBROUTINE XERBLA_ARRAY( SRNAME_ARRAY, SRNAME_LEN, INFO)
  90. *
  91. * -- LAPACK auxiliary routine --
  92. * -- LAPACK is a software package provided by Univ. of Tennessee, --
  93. * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
  94. *
  95. * .. Scalar Arguments ..
  96. INTEGER SRNAME_LEN, INFO
  97. * ..
  98. * .. Array Arguments ..
  99. CHARACTER(1) SRNAME_ARRAY(SRNAME_LEN)
  100. * ..
  101. *
  102. * =====================================================================
  103. *
  104. * ..
  105. * .. Local Scalars ..
  106. INTEGER I
  107. * ..
  108. * .. Local Arrays ..
  109. CHARACTER*32 SRNAME
  110. * ..
  111. * .. Intrinsic Functions ..
  112. INTRINSIC MIN, LEN
  113. * ..
  114. * .. External Functions ..
  115. EXTERNAL XERBLA
  116. * ..
  117. * .. Executable Statements ..
  118. SRNAME = ''
  119. DO I = 1, MIN( SRNAME_LEN, LEN( SRNAME ) )
  120. SRNAME( I:I ) = SRNAME_ARRAY( I )
  121. END DO
  122. CALL XERBLA( SRNAME, INFO )
  123. RETURN
  124. END