Add Abs operator

include/aidge/backend/cpu.hpp

@@ -12,6 +12,7 @@
 #ifndef AIDGE_CPU_IMPORTS_H_
 #define AIDGE_CPU_IMPORTS_H_
 
+#include "aidge/backend/cpu/operator/AbsImpl.hpp"
 #include "aidge/backend/cpu/operator/AddImpl.hpp"
 #include "aidge/backend/cpu/operator/AvgPoolingImpl.hpp"
 #include "aidge/backend/cpu/operator/MaxPoolingImpl.hpp"

include/aidge/backend/cpu/operator/AbsImpl.hpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#ifndef AIDGE_CPU_OPERATOR_ABSIMPL_H_
+#define AIDGE_CPU_OPERATOR_ABSIMPL_H_
+
+#include "aidge/backend/OperatorImpl.hpp"
+#include "aidge/operator/Abs.hpp"
+#include "aidge/utils/Registrar.hpp"
+#include "aidge/utils/Types.h"
+#include <memory>
+#include <vector>
+
+namespace Aidge {
+// class Abs_Op;
+
+// compute kernel registry for forward and backward
+class AbsImplForward_cpu
+    : public Registrable<AbsImplForward_cpu, std::tuple<DataType, DataType>, void(const std::size_t, const void*, void*)> {
+};
+class AbsImplBackward_cpu
+    : public Registrable<AbsImplBackward_cpu, std::tuple<DataType, DataType>, void(const std::size_t, const void*, void*)> {
+};
+
+class AbsImpl_cpu : public OperatorImpl {
+public:
+    AbsImpl_cpu(const Abs_Op& op) : OperatorImpl(op, "cpu") {}
+
+    static std::unique_ptr<AbsImpl_cpu> create(const Abs_Op& op) {
+        return std::make_unique<AbsImpl_cpu>(op);
+    }
+
+    Elts_t getNbRequiredProtected(const IOIndex_t inputIdx) const override final;
+    void forward() override;
+};
+
+namespace {
+static Registrar<Abs_Op> registrarAbsImpl_cpu("cpu", Aidge::AbsImpl_cpu::create);
+}
+}  // namespace Aidge
+
+#endif /* AIDGE_CPU_OPERATOR_ABSIMPL_H_ */

include/aidge/backend/cpu/operator/AbsImpl_forward_kernels.hpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#ifndef AIDGE_CPU_OPERATOR_ABSIMPL_FORWARD_KERNEL_H_
+#define AIDGE_CPU_OPERATOR_ABSIMPL_FORWARD_KERNEL_H_
+
+#include <cmath>
+
+#include "aidge/utils/Registrar.hpp"
+
+#include "aidge/backend/cpu/operator/AbsImpl.hpp"
+
+namespace Aidge {
+template <class I, class O>
+void AbsImpl_cpu_forward_kernel(std::size_t inputLenght,
+                                     const void* input_,
+                                     void* output_) {
+
+    const I* input = static_cast<const I*>(input_);
+    O* output = static_cast<O*>(output_);
+
+    for (std::size_t i = 0; i < inputLenght; ++i) {
+        output[i] = std::abs(input[i]);
+    }
+}
+
+namespace {
+static Registrar<AbsImplForward_cpu> registrarAbsImplForward_cpu_Float32(
+        {DataType::Float32, DataType::Float32}, Aidge::AbsImpl_cpu_forward_kernel<float, float>);
+static Registrar<AbsImplForward_cpu> registrarAbsImplForward_cpu_Int32(
+        {DataType::Int32, DataType::Int32}, Aidge::AbsImpl_cpu_forward_kernel<int, int>);
+static Registrar<AbsImplForward_cpu> registrarAbsImplForward_cpu_Float64(
+        {DataType::Float64, DataType::Float64}, Aidge::AbsImpl_cpu_forward_kernel<double, double>);
+}  // namespace
+}  // namespace Aidge
+
+#endif /* AIDGE_CPU_OPERATOR_ABSIMPL_FORWARD_KERNEL_H_ */

src/operator/AbsImpl.cpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#include "aidge/backend/cpu/operator/AbsImpl.hpp"
+
+#include <memory>
+#include <vector>
+
+#include "aidge/backend/cpu/operator/AbsImpl_forward_kernels.hpp"
+#include "aidge/data/Tensor.hpp"
+#include "aidge/operator/Abs.hpp"
+#include "aidge/utils/Types.h"
+
+Aidge::Elts_t Aidge::AbsImpl_cpu::getNbRequiredProtected(const Aidge::IOIndex_t /*inputIdx*/) const {
+    // this implementation can be in-place
+    return Elts_t::DataElts(0);
+}
+
+void Aidge::AbsImpl_cpu::forward() {
+    const Abs_Op& op = static_cast<const Abs_Op&>(mOp);
+
+    // Find the correct kernel type
+    auto kernelFunc = Registrar<AbsImplForward_cpu>::create({
+                            op.getInput(0)->dataType(),
+                            op.getOutput(0)->dataType()
+                        });
+
+    // Call kernel
+    kernelFunc(
+        op.getInput(0)->size(),
+        op.getInput(0)->getImpl()->rawPtr(),
+        op.getOutput(0)->getImpl()->rawPtr()
+    );
+}