Read a length-3 real configuration field by canonical schema key.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(c_ptr), | value | :: | handle | |||
| character(kind=c_char, len=1), | intent(in) | :: | key(*) | |||
| real(kind=c_double), | intent(out) | :: | values(*) | |||
| integer(kind=c_int), | value | :: | n_values |