COMPMID-2254
Implement NEAbsLayer

Change-Id: I88571010d727b2ac8d9fd3838a4d170cf66bf0ce
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1150
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Giuseppe Rossini <giuseppe.rossini@arm.com>
diff --git a/tests/validation/reference/ElementWiseUnary.cpp b/tests/validation/reference/ElementWiseUnary.cpp
index 9a98144..c6b2fd1 100644
--- a/tests/validation/reference/ElementWiseUnary.cpp
+++ b/tests/validation/reference/ElementWiseUnary.cpp
@@ -52,6 +52,9 @@
             case ElementWiseUnary::LOG:
                 dst[i] = std::log(src[i]);
                 break;
+            case ElementWiseUnary::ABS:
+                dst[i] = std::abs(src[i]);
+                break;
             default:
                 ARM_COMPUTE_ERROR("Not implemented");
         }