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// Copyright 2022 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/print.h"
#include <inttypes.h>
#include <stddef.h>
#include <stdio.h>
#include "hwy/base.h"
namespace hwy {
namespace detail {
HWY_DLLEXPORT void TypeName(const TypeInfo& info, size_t N, char* string100) {
const char prefix = info.is_float ? 'f' : (info.is_signed ? 'i' : 'u');
// Omit the xN suffix for scalars.
if (N == 1) {
snprintf(string100, 64, "%c%" PRIu64, prefix,
static_cast<uint64_t>(info.sizeof_t * 8));
} else {
snprintf(string100, 64, "%c%" PRIu64 "x%" PRIu64, prefix,
static_cast<uint64_t>(info.sizeof_t * 8),
static_cast<uint64_t>(N));
}
}
HWY_DLLEXPORT void ToString(const TypeInfo& info, const void* ptr,
char* string100) {
if (info.sizeof_t == 1) {
uint8_t byte;
CopyBytes<1>(ptr, &byte); // endian-safe: we ensured sizeof(T)=1.
snprintf(string100, 100, "0x%02X", byte);
} else if (info.sizeof_t == 2) {
uint16_t bits;
CopyBytes<2>(ptr, &bits);
snprintf(string100, 100, "0x%04X", bits);
} else if (info.sizeof_t == 4) {
if (info.is_float) {
float value;
CopyBytes<4>(ptr, &value);
snprintf(string100, 100, "%g", double(value));
} else if (info.is_signed) {
int32_t value;
CopyBytes<4>(ptr, &value);
snprintf(string100, 100, "%d", value);
} else {
uint32_t value;
CopyBytes<4>(ptr, &value);
snprintf(string100, 100, "%u", value);
}
} else {
HWY_ASSERT(info.sizeof_t == 8);
if (info.is_float) {
double value;
CopyBytes<8>(ptr, &value);
snprintf(string100, 100, "%g", value);
} else if (info.is_signed) {
int64_t value;
CopyBytes<8>(ptr, &value);
snprintf(string100, 100, "%" PRIi64 "", value);
} else {
uint64_t value;
CopyBytes<8>(ptr, &value);
snprintf(string100, 100, "%" PRIu64 "", value);
}
}
}
HWY_DLLEXPORT void PrintArray(const TypeInfo& info, const char* caption,
const void* array_void, size_t N, size_t lane_u,
size_t max_lanes) {
const uint8_t* array_bytes = reinterpret_cast<const uint8_t*>(array_void);
char type_name[100];
TypeName(info, N, type_name);
const intptr_t lane = intptr_t(lane_u);
const size_t begin = static_cast<size_t>(HWY_MAX(0, lane - 2));
const size_t end = HWY_MIN(begin + max_lanes, N);
fprintf(stderr, "%s %s [%" PRIu64 "+ ->]:\n ", type_name, caption,
static_cast<uint64_t>(begin));
for (size_t i = begin; i < end; ++i) {
const void* ptr = array_bytes + i * info.sizeof_t;
char str[100];
ToString(info, ptr, str);
fprintf(stderr, "%s,", str);
}
if (begin >= end) fprintf(stderr, "(out of bounds)");
fprintf(stderr, "\n");
}
} // namespace detail
} // namespace hwy
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