COMPMID-1758: NEON: Implement Range

Change-Id: I56dff9462b85760fbed6db43224cadb90d283810
Reviewed-on: https://review.mlplatform.org/472
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/arm_compute/core/NEON/kernels/NERangeKernel.h b/arm_compute/core/NEON/kernels/NERangeKernel.h
new file mode 100644
index 0000000000..eeacf3f8f5
--- /dev/null
+++ b/arm_compute/core/NEON/kernels/NERangeKernel.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2018-2019 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_NERANGEKERNEL_H__
+#define __ARM_COMPUTE_NERANGEKERNEL_H__
+
+#include "arm_compute/core/NEON/INEKernel.h"
+#include "arm_compute/core/Types.h"
+
+namespace arm_compute
+{
+class ITensor;
+
+/** Kernel class for Range
+ *
+ * range generates a 1-D tensor containing a sequence of numbers that begins at 'start' and extends by increments
+ * of 'step' up to but not including 'end'.
+ */
+class NERangeKernel : public INEKernel
+{
+public:
+    const char *name() const override
+    {
+        return "NERangeKernel";
+    }
+    /** Default constructor */
+    NERangeKernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NERangeKernel(const NERangeKernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    NERangeKernel &operator=(const NERangeKernel &) = delete;
+    /** Allow instances of this class to be moved */
+    NERangeKernel(NERangeKernel &&) = default;
+    /** Allow instances of this class to be moved */
+    NERangeKernel &operator=(NERangeKernel &&) = default;
+    /** Default destructor */
+    ~NERangeKernel() = default;
+    /** Initialize the kernel's output tensor, start, end and step of the sequence.
+     *
+     * @param[out] output Output tensor. Data types supported: U8/S8/U16/S16/U32/S32/F16/F32.
+     * @param[in]  start  The starting value of the sequence.
+     * @param[in]  end    The ending (not including) value of the sequence.
+     * @param[in]  step   The gap between each pair of values in the sequence.
+     */
+    void configure(ITensor *output, float start, float end, float step);
+    /** Static function to check if given info will lead to a valid configuration of @ref NERangeKernel
+     *
+     * @param[in] output Output tensor info. Data types supported: U8/S8/U16/S16/U32/S32/F16/F32.
+     * @param[in] start  The starting value of the sequence.
+     * @param[in] end    The ending (not including) value of the sequence.
+     * @param[in] step   The gap between each pair of values in the sequence.
+     *
+     * @return a status
+     */
+    static Status validate(const ITensorInfo *output, float start, float end, float step);
+
+    // Inherited methods overridden:
+    void run(const Window &window, const ThreadInfo &info) override;
+
+private:
+    using RangeFunction = void(ITensor *output, float start, float step, const Window &window);
+
+    RangeFunction *_func;   /**< Range function to be called */
+    float          _start;  /**< Start of sequence */
+    float          _end;    /**< End of sequence */
+    float          _step;   /**< Increment/step value */
+    ITensor       *_output; /**< Destination tensor */
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_NERANGEKERNEL_H__ */