Add TOSA MI verification methods

Adds utility functions that enable compliance verification of TOSA MI
operators; as per section 1.8.2 in the TOSA specification.

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I0cced0ff8875ac8d78b1943211438713d1c51b88

1 files changed, 56 insertions, 0 deletions

diff --git a/reference_model/test/verify_tests.cpp b/reference_model/test/verify_tests.cpp
new file mode 100644
index 0000000..f43804f
--- /dev/null
+++ b/reference_model/test/verify_tests.cpp
@@ -0,0 +1,56 @@
+// Copyright (c) 2023, ARM Limited.
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+//    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.
+#include "verify.h"
+
+#include <doctest.h>
+
+#include <array>
+#include <numeric>
+#include <vector>
+
+TEST_SUITE("verify")
+{
+    TEST_CASE("check_element_accfp32")
+    {
+        const size_t KS = 27;
+
+        // Negative (bnd == 0.0)
+        REQUIRE_FALSE(tosa_validate_element_accfp32(0.0, 0.0, 1.0, KS).is_valid);
+        REQUIRE_FALSE(tosa_validate_element_accfp32(1.0, 0.0, 0.0, KS).is_valid);
+        // Negative (bnd > 0.0)
+        REQUIRE_FALSE(tosa_validate_element_accfp32(5.0, 5.0, 5.1, KS).is_valid);
+
+        // Positive (bnd == 0.0 && ref == 0.0 && imp == 0.0)
+        REQUIRE(tosa_validate_element_accfp32(0.0, 0.0, 0.0, KS).is_valid);
+        REQUIRE(tosa_validate_element_accfp32(0.0, 0.0, 0.0, KS).error == 0.0);
+
+        // Positive (bnd > 0.0)
+        REQUIRE(tosa_validate_element_accfp32(4.0, 4.0, 4.0, KS).error == 0.0);
+        REQUIRE(tosa_validate_element_accfp32(4.0, 4.0, 4.0, KS).error == 0.0);
+        REQUIRE(tosa_validate_element_accfp32(4.0, 4.0, 4.0, KS).error == 0.0);
+    }
+    TEST_CASE("check_output_error")
+    {
+        const size_t KS = 27;
+        const size_t T  = 1024;
+
+        // Negative (S!=1 && S!=2 && (abs(err_sum) > 2*sqrt(KS*T)))
+        REQUIRE_FALSE(tosa_validate_output_error(1560, 112000, KS, T, 0));
+        // Negative (err_sum_sq > 0.4*KS*T))
+        REQUIRE_FALSE(tosa_validate_output_error(1560, 112000, KS, T, 1));
+        // Positive
+        REQUIRE(tosa_validate_output_error(10, 254, KS, T, 0));
+        REQUIRE(tosa_validate_output_error(10, 254, KS, T, 1));
+    }
+}