
errorp(3)              C LIBRARY FUNCTIONS              errorp(3)

NAME
     errorp() - determine whether or not a given variable  is  an
     error code

SYNOPSIS
     int errorp(mixed arg);

DESCRIPTION
     Returns 1 if `arg' is an integer that is an error code.

     Eventually efuns will be modified to return  standard  error
     codes so that code like this will be possible:

      if (errorp(result  =  efun_call()))  printf("error  =  %d0,
     result);

     Will also be a perror(result) efun to  return  error  string
     that goes with a particular error integer.

Sun Release 4.1           Last change:                          1

