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C Library Functions  - system_errno (3)

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NAME

system_errno(3f) - [M_system:ERROR_PROCESSING] C error return value (LICENSE:PD)

CONTENTS

Synopsis
Description
Examples

SYNOPSIS

integer(kind=c_int) function system_errno()

DESCRIPTION

Many C routines return an error code which can be queried by errno. The M_system(3fm) is primarily composed of Fortran routines that call C routines. In the cases where an error code is returned vi system_errno(3f) these routines will indicate it.

EXAMPLES

Sample program:

   program demo_system_errno
   use M_system, only : system_errno, system_unlink, system_perror
   implicit none
   integer :: stat
   stat=system_unlink(’not there/OR/anywhere’)
   if(stat.ne.0)then
           write(*,*)’err=’,system_errno()
           call system_perror(’*demo_system_errno*’)
   endif
   end program demo_system_errno

Results:

 >  err=           2
 >  *demo_system_errno*: No such file or directory

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Nemo Release 3.1

system_errno (3)

June 29, 2025

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