Viacheslav Klimov
7 months ago
committed by
GitHub
GitHub
15 changed files with 242 additions and 93 deletions
@ -0,0 +1,49 @@ |
|||
/** |
|||
* Copyright © 2016-2026 The Thingsboard Authors |
|||
* |
|||
* Licensed under the Apache License, Version 2.0 (the "License"); |
|||
* you may not use this file except in compliance with the License. |
|||
* You may obtain a copy of the License at |
|||
* |
|||
* http://www.apache.org/licenses/LICENSE-2.0
|
|||
* |
|||
* Unless required by applicable law or agreed to in writing, software |
|||
* distributed under the License is distributed on an "AS IS" BASIS, |
|||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|||
* See the License for the specific language governing permissions and |
|||
* limitations under the License. |
|||
*/ |
|||
package org.thingsboard.common.util; |
|||
|
|||
import java.math.BigDecimal; |
|||
import java.math.RoundingMode; |
|||
|
|||
public class NumberUtils { |
|||
|
|||
public static boolean isNaN(double value) { |
|||
return Double.isNaN(value); |
|||
} |
|||
|
|||
public static double toFixed(double value, int precision) { |
|||
return BigDecimal.valueOf(value).setScale(precision, RoundingMode.HALF_UP).doubleValue(); |
|||
} |
|||
|
|||
public static float toFixed(float value, int precision) { |
|||
return BigDecimal.valueOf(value).setScale(precision, RoundingMode.HALF_UP).floatValue(); |
|||
} |
|||
|
|||
public static int toInt(double value) { |
|||
return BigDecimal.valueOf(value).setScale(0, RoundingMode.HALF_UP).intValue(); |
|||
} |
|||
|
|||
public static Object roundResult(double value, Integer precision) { |
|||
if (precision == null) { |
|||
return value; |
|||
} |
|||
if (precision.equals(0)) { |
|||
return toInt(value); |
|||
} |
|||
return toFixed(value, precision); |
|||
} |
|||
|
|||
} |
|||
@ -0,0 +1,61 @@ |
|||
/** |
|||
* Copyright © 2016-2026 The Thingsboard Authors |
|||
* |
|||
* Licensed under the Apache License, Version 2.0 (the "License"); |
|||
* you may not use this file except in compliance with the License. |
|||
* You may obtain a copy of the License at |
|||
* |
|||
* http://www.apache.org/licenses/LICENSE-2.0
|
|||
* |
|||
* Unless required by applicable law or agreed to in writing, software |
|||
* distributed under the License is distributed on an "AS IS" BASIS, |
|||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|||
* See the License for the specific language governing permissions and |
|||
* limitations under the License. |
|||
*/ |
|||
package org.thingsboard.common.util; |
|||
|
|||
import org.junit.jupiter.api.Test; |
|||
|
|||
import static org.assertj.core.api.Assertions.assertThat; |
|||
|
|||
public class NumberUtilsTest { |
|||
|
|||
private final Float floatVal = 29.29824f; |
|||
private final double doubleVal = 1729.1729; |
|||
|
|||
@Test |
|||
public void isNaN() { |
|||
assertThat(NumberUtils.isNaN(doubleVal)).isFalse(); |
|||
assertThat(NumberUtils.isNaN(Double.NaN)).isTrue(); |
|||
} |
|||
|
|||
@Test |
|||
public void toFixedFloat() { |
|||
float actualF = NumberUtils.toFixed(floatVal, 3); |
|||
assertThat(Float.compare(floatVal, actualF)).isEqualTo(1); |
|||
assertThat(Float.compare(29.298f, actualF)).isEqualTo(0); |
|||
} |
|||
|
|||
@Test |
|||
public void toFixedDouble() { |
|||
double actualD = NumberUtils.toFixed(doubleVal, 3); |
|||
assertThat(Double.compare(doubleVal, actualD)).isEqualTo(-1); |
|||
assertThat(Double.compare(1729.173, actualD)).isEqualTo(0); |
|||
} |
|||
|
|||
@Test |
|||
public void toInt() { |
|||
assertThat(NumberUtils.toInt(doubleVal)).isEqualTo(1729); |
|||
assertThat(NumberUtils.toInt(12.8)).isEqualTo(13); |
|||
assertThat(NumberUtils.toInt(28.0)).isEqualTo(28); |
|||
} |
|||
|
|||
@Test |
|||
public void roundResult() { |
|||
assertThat(NumberUtils.roundResult(doubleVal, null)).isEqualTo(1729.1729); |
|||
assertThat(NumberUtils.roundResult(doubleVal, 0)).isEqualTo(1729); |
|||
assertThat(NumberUtils.roundResult(doubleVal, 2)).isEqualTo(1729.17); |
|||
} |
|||
|
|||
} |
|||
Loading…
Reference in new issue