Function eccodes_sys::grib_get_double

pub unsafe extern "C" fn grib_get_double(
    h: *const grib_handle, 
    key: *const c_char, 
    value: *mut f64
) -> c_int

Get a double value from a key, if several keys of the same name are present, the last one is returned @see grib_set_double

@param h : the handle to get the data from @param key : the key to be searched @param value : the address of a double where the data will be retrieved @return 0 if OK, integer value on error