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// Copyright 2021 Google LLC
// SPDX-License-Identifier: Apache-2.0
//
// 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 "hwy/tests/test_util.h"
#include <stddef.h>
#include <stdio.h>
#include <cmath>
#include "hwy/base.h"
#include "hwy/print.h"
namespace hwy {
HWY_TEST_DLLEXPORT bool BytesEqual(const void* p1, const void* p2,
const size_t size, size_t* pos) {
const uint8_t* bytes1 = reinterpret_cast<const uint8_t*>(p1);
const uint8_t* bytes2 = reinterpret_cast<const uint8_t*>(p2);
for (size_t i = 0; i < size; ++i) {
if (bytes1[i] != bytes2[i]) {
if (pos != nullptr) {
*pos = i;
}
return false;
}
}
return true;
}
void AssertStringEqual(const char* expected, const char* actual,
const char* target_name, const char* filename,
int line) {
while (*expected == *actual++) {
if (*expected++ == '\0') return;
}
Abort(filename, line, "%s string mismatch: expected '%s', got '%s'.\n",
target_name, expected, actual);
}
namespace detail {
HWY_TEST_DLLEXPORT bool IsEqual(const TypeInfo& info, const void* expected_ptr,
const void* actual_ptr) {
if (!info.is_float) {
return BytesEqual(expected_ptr, actual_ptr, info.sizeof_t);
}
if (info.sizeof_t == 4) {
float expected, actual;
CopyBytes<4>(expected_ptr, &expected);
CopyBytes<4>(actual_ptr, &actual);
return ComputeUlpDelta(expected, actual) <= 1;
} else if (info.sizeof_t == 8) {
double expected, actual;
CopyBytes<8>(expected_ptr, &expected);
CopyBytes<8>(actual_ptr, &actual);
return ComputeUlpDelta(expected, actual) <= 1;
} else {
HWY_ABORT("Unexpected float size %d\n", static_cast<int>(info.sizeof_t));
return false;
}
}
HWY_TEST_DLLEXPORT HWY_NORETURN void PrintMismatchAndAbort(
const TypeInfo& info, const void* expected_ptr, const void* actual_ptr,
const char* target_name, const char* filename, int line, size_t lane,
size_t num_lanes) {
char type_name[100];
TypeName(info, 1, type_name);
char expected_str[100];
ToString(info, expected_ptr, expected_str);
char actual_str[100];
ToString(info, actual_ptr, actual_str);
Abort(filename, line,
"%s, %sx%d lane %d mismatch: expected '%s', got '%s'.\n", target_name,
type_name, static_cast<int>(num_lanes), static_cast<int>(lane),
expected_str, actual_str);
}
HWY_TEST_DLLEXPORT void AssertArrayEqual(const TypeInfo& info,
const void* expected_void,
const void* actual_void, size_t N,
const char* target_name,
const char* filename, int line) {
const uint8_t* expected_array =
reinterpret_cast<const uint8_t*>(expected_void);
const uint8_t* actual_array = reinterpret_cast<const uint8_t*>(actual_void);
for (size_t i = 0; i < N; ++i) {
const void* expected_ptr = expected_array + i * info.sizeof_t;
const void* actual_ptr = actual_array + i * info.sizeof_t;
if (!IsEqual(info, expected_ptr, actual_ptr)) {
fprintf(stderr, "\n\n");
PrintArray(info, "expect", expected_array, N, i);
PrintArray(info, "actual", actual_array, N, i);
PrintMismatchAndAbort(info, expected_ptr, actual_ptr, target_name,
filename, line, i, N);
}
}
}
} // namespace detail
} // namespace hwy
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