Intel® Fortran Compiler 17.0 Developer Guide and Reference
POSIX Subroutine: Adds a new environment variable or sets the value of an environment variable.
USE IFPOSIX
CALL PXFSETENV (name,lenname,new,lennew,ioverwrite,ierror)
name |
(Input) Character. The name of the environment variable. |
lenname |
(Input) INTEGER(4). The length of name. |
new |
(Input) Character. The value of the environment variable. |
lennew |
(Input) INTEGER(4). The length of new. |
ioverwrite |
(Input) INTEGER(4). A flag indicating whether to change the value of the environment variable if it exists. |
ierror |
(Output) INTEGER(4). The error status. |
If successful, ierror is set to zero; otherwise, an error code.
If name does not exist, PXFSETENV adds it with valuenew.
If name exists, PXFSETENV sets its value to new ifioverwrite is a nonzero number. If ioverwrite is zero, the value of name is not changed.
If lennew is equal to zero, PXFSETENV sets the value of the environment variable to a string equal to new after removing any leading or trailing blanks.
program test2
use ifposix
character*10 name, new
integer lenname, lennew, ioverwrite, ierror
name = "FOR_NEW"
lenname = 7
new = "ON"
lennew = 2
ioverwrite = 1
CALL PXFSETENV (name, lenname, new, lennew, ioverwrite, ierror)
print *, "name= ", name
print *, "lenname= ", lenname
print *, "new= ", lenname
print *, "lennew= ", lenname
print *, "ierror= ", ierror
end