PERROR(3F)	    UNIX Programmer's Manual	       PERROR(3F)



NAME
     perror, gerror, ierrno - get system error messages

SYNOPSIS
     subroutine perror (string)
     character*(*) string

     subroutine gerror (string)
     character*(*) string

     character*(*) function gerror()

     function ierrno()

DESCRIPTION
     _P_e_r_r_o_r will write a message to fortran logical unit 0
     appropriate to the last detected system error.  _S_t_r_i_n_g will
     be written preceding the standard error message.

     _G_e_r_r_o_r returns the system error message in character vari-
     able _s_t_r_i_n_g. _G_e_r_r_o_r may be called either as a subroutine or
     as a function.

     _I_e_r_r_n_o will return 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.

FILES
     /usr/lib/libU77.a

SEE ALSO
     intro(2), perror(3)
     D. L. Wasley, _I_n_t_r_o_d_u_c_t_i_o_n _t_o _t_h_e _f_7_7 _I/_O _L_i_b_r_a_r_y

BUGS
     _S_t_r_i_n_g in the call to _p_e_r_r_o_r can be no longer than 127 char-
     acters.

     The length of the string returned by _g_e_r_r_o_r is determined by
     the calling program.

NOTES
     UNIX system error codes are described in _i_n_t_r_o(2).  The f77
     I/O error codes and their meanings are:

	  100  ``error in format''
	  101  ``illegal unit number''
	  102  ``formatted i/o not allowed''
	  103  ``unformatted i/o not allowed''



Printed 11/26/99	  June 7, 1985				1






PERROR(3F)	    UNIX Programmer's Manual	       PERROR(3F)



	  104  ``direct i/o not allowed''
	  105  ``sequential i/o not allowed''
	  106  ``can't backspace file''
	  107  ``off beginning of record''
	  108  ``can't stat file''
	  109  ``no * after repeat count''
	  110  ``off end of record''
	  111  ``truncation failed''
	  112  ``incomprehensible list input''
	  113  ``out of free space''
	  114  ``unit not connected''
	  115  ``invalid data for integer format term''
	  116  ``invalid data for logical format term''
	  117  ``'new' file exists''
	  118  ``can't find 'old' file''
	  119  ``opening too many files or unknown system error''
	  120  ``requires seek ability''
	  121  ``illegal argument''
	  122  ``negative repeat count''
	  123  ``illegal operation for unit''
	  124  ``invalid data for d, e, f, or g format term''


































Printed 11/26/99	  June 7, 1985				2