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/*
* ******************************************************************************
* *
* *
* * This program and the accompanying materials are made available under the
* * terms of the Apache License, Version 2.0 which is available at
* * https://www.apache.org/licenses/LICENSE-2.0.
* *
* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
* * 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.
* *
* * SPDX-License-Identifier: Apache-2.0
* *****************************************************************************
*/
package org.nd4j.linalg.factory;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import java.util.Arrays;
public class NDValidation {
private NDValidation() {
}
/**
* Validate that the operation is being applied on a numerical INDArray (not boolean or utf8).
* Some operations (such as sum, norm2, add(Number) etc) don't make sense when applied to boolean/utf8 arrays
*
* @param opName Operation name to print in the exception
* @param v Variable to perform operation on
*/
public static void validateNumerical(String opName, INDArray v) {
if (v == null)
return;
if (v.dataType() == DataType.BOOL || v.dataType() == DataType.UTF8)
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to array with non-numerical data type " + v.dataType());
}
/**
* Validate that the operation is being applied on numerical INDArrays (not boolean or utf8).
* Some operations (such as sum, norm2, add(Number) etc) don't make sense when applied to boolean/utf8 arrays
*
* @param opName Operation name to print in the exception
* @param v Variable to perform operation on
*/
public static void validateNumerical(String opName, INDArray[] v) {
if (v == null)
return;
for (int i = 0; i < v.length; i++) {
if (v[i].dataType() == DataType.BOOL || v[i].dataType() == DataType.UTF8)
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to input array " + i + " with non-numerical data type " + v[i].dataType());
}
}
/**
* Validate that the operation is being applied on a numerical INDArray (not boolean or utf8).
* Some operations (such as sum, norm2, add(Number) etc) don't make sense when applied to boolean/utf8 arrays
*
* @param opName Operation name to print in the exception
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateNumerical(String opName, String inputName, INDArray v) {
if (v == null)
return;
if (v.dataType() == DataType.BOOL || v.dataType() == DataType.UTF8)
throw new IllegalStateException("Input \"" + inputName + "\" for operation \"" + opName + "\" must be an numerical type type;" +
" got array with non-integer data type " + v.dataType());
}
/**
* Validate that the operation is being applied on numerical INDArrays (not boolean or utf8).
* Some operations (such as sum, norm2, add(Number) etc) don't make sense when applied to boolean/utf8 arrays
*
* @param opName Operation name to print in the exception
* @param v Variable to perform operation on
*/
public static void validateNumerical(String opName, String inputName, INDArray[] v) {
if (v == null)
return;
for (int i = 0; i < v.length; i++) {
if (v[i].dataType() == DataType.BOOL || v[i].dataType() == DataType.UTF8)
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to input \"" + inputName + "\" array " + i + " with non-numerical data type " + v[i].dataType());
}
}
/**
* Validate that the operation is being applied on numerical INDArrays (not boolean or utf8).
* Some operations (such as sum, norm2, add(Number) etc don't make sense when applied to boolean/utf8 arrays
*
* @param opName Operation name to print in the exception
* @param v1 Variable to validate datatype for (input to operation)
* @param v2 Variable to validate datatype for (input to operation)
*/
public static void validateNumerical(String opName, INDArray v1, INDArray v2) {
if (v1.dataType() == DataType.BOOL || v1.dataType() == DataType.UTF8 || v2.dataType() == DataType.BOOL || v2.dataType() == DataType.UTF8)
throw new IllegalStateException("Cannot perform operation \"" + opName + "\" on arrays if one or both variables" +
" are non-numerical: got " + v1.dataType() + " and " + v2.dataType());
}
/**
* Validate that the operation is being applied on an integer type INDArray
*
* @param opName Operation name to print in the exception
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateInteger(String opName, INDArray v) {
if (v == null)
return;
if (!v.dataType().isIntType())
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to array with non-integer data type " + v.dataType());
}
/**
* Validate that the operation is being applied on an integer type INDArray
*
* @param opName Operation name to print in the exception
* @param inputName Name of the input to the op to validate
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateInteger(String opName, String inputName, INDArray v) {
if (v == null)
return;
if (!v.dataType().isIntType())
throw new IllegalStateException("Input \"" + inputName + "\" for operation \"" + opName + "\" must be an integer" +
" type; got array with non-integer data type " + v.dataType());
}
/**
* Validate that the operation is being applied on an integer type INDArray []
*
* @param opName Operation name to print in the exception
* @param inputName Name of the input to the op to validate
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateInteger(String opName, String inputName, INDArray [] v) {
if (v == null)
return;
for (int i = 0; i < v.length; i++) {
if (!v[i].dataType().isIntType())
throw new IllegalStateException("Input \"" + inputName + "\" for operation \"" + opName + "\" must be an integer" +
" type; got array with non-integer data type member" + v[i].dataType());
}
}
/**
* Validate that the operation is being applied on an floating point type INDArray
*
* @param opName Operation name to print in the exception
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateFloatingPoint(String opName, INDArray v) {
if (v == null)
return;
if (!v.dataType().isFPType())
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to array with non-floating point data type " + v.dataType());
}
/**
* Validate that the operation is being applied on a floating point type INDArray
*
* @param opName Operation name to print in the exception
* @param inputName Name of the input to the op to validate
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateFloatingPoint(String opName, String inputName, INDArray v) {
if (v == null)
return;
if (!v.dataType().isFPType())
throw new IllegalStateException("Input \"" + inputName + "\" for operation \"" + opName +
"\" must be an floating point type; got array with non-floating point data type " + v.dataType());
}
/**
* Validate that the operation is being applied on a boolean type INDArray
*
* @param opName Operation name to print in the exception
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateBool(String opName, INDArray v) {
if (v == null)
return;
if (v.dataType() != DataType.BOOL)
throw new IllegalStateException("Cannot apply operation \"" + opName + "\" to array with non-boolean point data type " + v.dataType());
}
/**
* Validate that the operation is being applied on a boolean type INDArray
*
* @param opName Operation name to print in the exception
* @param inputName Name of the input to the op to validate
* @param v Variable to validate datatype for (input to operation)
*/
public static void validateBool(String opName, String inputName, INDArray v) {
if (v == null)
return;
if (v.dataType() != DataType.BOOL)
throw new IllegalStateException("Input \"" + inputName + "\" for operation \"" + opName +
"\" must be an boolean variable; got array with non-boolean data type " + v.dataType());
}
/**
* Validate that the operation is being applied on boolean INDArrays
*
* @param opName Operation name to print in the exception
* @param v1 Variable to validate datatype for (input to operation)
* @param v2 Variable to validate datatype for (input to operation)
*/
public static void validateBool(String opName, INDArray v1, INDArray v2) {
if (v1.dataType() != DataType.BOOL || v2.dataType() != DataType.BOOL)
throw new IllegalStateException("Cannot perform operation \"" + opName + "\" on array if one or both variables are non-boolean: "
+ v1.dataType() + " and " + v2.dataType());
}
/**
* Validate that the operation is being applied on array with the exact same datatypes (which may optionally be
* restricted to numerical INDArrays only (not boolean or utf8))
*
* @param opName Operation name to print in the exception
* @param numericalOnly If true, the variables must all be the same type, and must be numerical (not boolean/utf8)
* @param vars Variable to perform operation on
*/
public static void validateSameType(String opName, boolean numericalOnly, INDArray... vars) {
if (vars.length == 0)
return;
if (vars.length == 1) {
if (numericalOnly) {
validateNumerical(opName, vars[0]);
}
} else {
DataType first = vars[0].dataType();
if (numericalOnly)
validateNumerical(opName, vars[0]);
for (int i = 1; i < vars.length; i++) {
if (first != vars[i].dataType()) {
DataType[] dtypes = new DataType[vars.length];
for (int j = 0; j < vars.length; j++) {
dtypes[j] = vars[j].dataType();
}
throw new IllegalStateException("Cannot perform operation \"" + opName + "\" to arrays with different datatypes:" +
" Got arrays with datatypes " + Arrays.toString(dtypes));
}
}
}
}
public static boolean isSameType(INDArray x, INDArray y) {
return x.dataType() == y.dataType();
}
public static boolean isSameType(INDArray[] x) {
if(x.length == 0)
return true;
DataType first = x[0].dataType();
for( int i=1; i
