perror(3F)

NAME
     perror, gerror, ierrno, strerror - get system error messages

SYNOPSIS
     subroutine perror (string)
     character*(*) string
     subroutine gerror (string)
     character*(*) string
     character*(*) function gerror()
     function ierrno()
     subroutine strerror (ierror_num, string)
     integer ierror_num
     character*(*) string

IMPLEMENTATION
     IRIX systems

DESCRIPTION
     perror writes a message to Fortran logical unit 0 appropriate to the
     last detected system error.  string is written preceding the standard
     error message.

     gerror returns the system error message in character variable string.
     gerror may be called either as a subroutine or as a function.

     ierrno returns the error number of the last detected system error.
     This number is updated only when an error actually occurs.  Most
     routines and I/O statements that might generate such errors return an
     error code after the call; that value is a more reliable indicator of
     what caused the error condition.

     strerror is the same as gerror except you pass in an explicit error
     number.

BUGS
     String in the call to perror can be no longer than 127 characters.

     The length of the string returned by gerror and strerror is determined
     by the calling program.

     Error numbers > 100 are mapped to Fortran errors.  Thus you may not be
     able to retrieve the UNIX errors > 100 using these functions.

NOTES
     UNIX system error codes are described in intro(2).  The F77 I/O error
     codes and their meanings are the following:
     100
          error in format
     101
          out of space for i/o unit table
     102
          formatted i/o not allowed
     103
          unformatted i/o not allowed
     104
          direct i/o not allowed
     105
          sequential i/o not allowed
     106
          can't backspace file
     107
          null file name
     108
          can't stat file
     109
          file already connected
     110
          off end of record
     111
          truncation failed in end file
     112
          incomprehensible list input
     113
          out of free space
     114
          unit not connected
     115
          read unexpected character
     116
          blank logical input field
     117
          bad variable type
     118
          bad namelist name
     119
          variable not in namelist
     120
          no end record
     121
          namelist subscript out of range
     122
          negative repeat count
     123
          illegal operation for unit
     124
          off beginning of record
     125
          no * after repeat count
     126
     127
          can't find 'old' file
     128
          unknown system error
     129
          requires seek ability
     130
          illegal argument
     131
          duplicate key value on write
     132
          indexed file not open
     133
          bad isam argument
     134
          bad key description
     135
          too many open indexed files
     136
          corrupted isam file
     137
          isam file not opened for exclusive access
     138
          record locked
     139
          key already exists
     140
          cannot delete primary key
     141
          beginning or end of file reached
     142
          cannot find requested record
     143
          current record not defined
     144
          isam file is exclusively locked
     145
          filename too long
     146
          cannot create lock file
     147
          record too long
     148
          key structure does not match file structure
     149
          direct access on an indexed file not allowed
     150
          keyed access on a sequential file not allowed
     151
          keyed access on a relative file not allowed
     152
          append access on an indexed file not allowed
     153
          must specify record length
     154
          key field value type does not match key type
     155
          character key field value length too long
     156
          fixed record on sequential file not allowed
     157
          variable records allowed only on unformatted sequential file
     158
          stream records allowed only on formatted sequential file
     159
          maximum number of records in direct access file exceeded
     160
          attempt to create or write to a readonly file
     161
          must specify key descriptions
     162
          carriage control not allowed for unformatted units
     163
          indexed files only
     164
          cannot use on indexed file
     165
          cannot use on indexed or append file
     166
          error in closing file
     167
          invalid code in format specification
     168
          invalid record number in direct access file
     169
          cannot have endfile record on non-sequential file
     170
          cannot position within current file
     171
          cannot have sequential records on direct access file
     172
          cannot find namelist in input file
     173
          cannot read from stdout
     174
          cannot write to stdin
     175
          stat call failed in f77inode
     181
          Direct unformatted I/O not allowed.
     182
          cannot open a directory
     183
          subscript out of bounds
     184
          function not declared as varargs
     185
          internal error -- may be due to illegal vararg usage.

FILES
     /usr/ucb/lib/libU77.a
     /usr/lib/libI77.a

SEE ALSO
     intro(2), perror(3F)

     This man page is available only online.