restrict decimal precision to 9

Author: saadrazaa

gnpy/core/elements.py

@@ -716,8 +716,8 @@ def to_response_element_json(self):
             { 'metric-type': 'Effective Gain', 'metric-unit': 'dB', 'metric-value': self.effective_gain},
             { 'metric-type': 'Noise Figure', 'metric-unit': 'dB', 'metric-value': nf},
             { 'metric-type': 'Padding Attenuator In', 'metric-unit': 'dB', 'metric-value': self.att_in},
-            { 'metric-type': 'Power In', 'metric-unit': 'dBm', 'metric-value': self.pin_db},
-            { 'metric-type': 'Power Out', 'metric-unit': 'dBm', 'metric-value': self.pout_db},
+            { 'metric-type': 'Power In', 'metric-unit': 'dBm', 'metric-value': round(self.pin_db, 9)},
+            { 'metric-type': 'Power Out', 'metric-unit': 'dBm', 'metric-value': round(self.pout_db, 9)},
             { 'metric-type': 'Delta_P', 'metric-unit': 'dB', 'metric-value': self.delta_p if self.delta_p is not None else None},
             { 'metric-type': 'Target Power Per Channel', 'metric-unit': 'dBm', 'metric-value': self.target_pch_out_db if self.target_pch_out_db is not None else None},
             { 'metric-type': 'Effective Power Per Channel', 'metric-unit': 'dBm', 'metric-value': self.effective_pch_out_db},