Returns an index for accessing feature values.

    Format

      #include  <unixlib.h>

      int decc$feature_get_index  (char *name);

1  –  Argument

 name

    Pointer to a character string passed as a name in the list of
    supported features.

2  –  Description

    The decc$feature_get_index function looks up the string passed
    as name in the list of supported features. If the name is found,
    decc$feature_get_index returns a (nonnegative) index that can
    be used to set or retrieve the values for the feature. The
    comparison for name is case insensitive.

    On error, -1 is returned and errno is set to indicate the error.

    See also decc$feature_get, decc$feature_get_value, decc$feature_
    get_name, decc$feature_set, decc$feature_set_value, decc$feature_
    show, and decc$feature_show_all.

3  –  Return Values

    n                  A nonnegative index that can be used to set or
                       retrieve the specified values for the feature.
    -1                 Indicates an error; errno is set.