Break up Utils.h a bit to reduce unused code being included everywhere

Move some maths-related things from Utils.h to new Math.h header in utils/math.
Move some routines used for Tensor shape validation to Validate.h

Change-Id: I8ce89fe03ec3ae1b61d1a80c282b8b91eea0cfb3
Signed-off-by: Matthew Bentham <Matthew.Bentham@arm.com>
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/c/VisualCompute/ComputeLibrary/+/524783
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Tested-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9743
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/arm_compute/core/utils/math/Math.h b/arm_compute/core/utils/math/Math.h
new file mode 100644
index 0000000000..c1dce7ff08
--- /dev/null
+++ b/arm_compute/core/utils/math/Math.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017-2018, 2023 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_UTILS_MATH_H
+#define ARM_COMPUTE_UTILS_MATH_H
+
+namespace arm_compute
+{
+/** Calculate the rounded up quotient of val / m.
+ *
+ * @param[in] val Value to divide and round up.
+ * @param[in] m   Value to divide by.
+ *
+ * @return the result.
+ */
+template <typename S, typename T>
+constexpr auto DIV_CEIL(S val, T m) -> decltype((val + m - 1) / m)
+{
+    return (val + m - 1) / m;
+}
+
+/** Computes the smallest number larger or equal to value that is a multiple of divisor.
+ *
+ * @param[in] value   Lower bound value
+ * @param[in] divisor Value to compute multiple of.
+ *
+ * @return the result.
+ */
+template <typename S, typename T>
+inline auto ceil_to_multiple(S value, T divisor) -> decltype(((value + divisor - 1) / divisor) * divisor)
+{
+    ARM_COMPUTE_ERROR_ON(value < 0 || divisor <= 0);
+    return DIV_CEIL(value, divisor) * divisor;
+}
+
+/** Computes the largest number smaller or equal to value that is a multiple of divisor.
+ *
+ * @param[in] value   Upper bound value
+ * @param[in] divisor Value to compute multiple of.
+ *
+ * @return the result.
+ */
+template <typename S, typename T>
+inline auto floor_to_multiple(S value, T divisor) -> decltype((value / divisor) * divisor)
+{
+    ARM_COMPUTE_ERROR_ON(value < 0 || divisor <= 0);
+    return (value / divisor) * divisor;
+}
+
+}
+#endif /*ARM_COMPUTE_UTILS_MATH_H */