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// Copyright 2018 Google LLC
//
// 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
//
// https://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.
#ifndef ASTC_CODEC_BASE_UTILS_H_
#define ASTC_CODEC_BASE_UTILS_H_
#include <cassert>
#include <cstdio>
#include <cstdlib>
#ifdef NDEBUG
#define UTILS_RELEASE_ASSERT(x) \
do { \
const bool result = (x); \
if (!result) { \
fprintf(stderr, "Error: UTILS_RELEASE_ASSERT failed: %s\n", #x); \
abort(); \
} \
} while (false)
#else
#define UTILS_RELEASE_ASSERT(x) assert(x)
#endif
// In C++11, `assert` can't be used portably within constexpr functions.
// ASTC_CONSTEXPR_ASSERT functions as a runtime assert but works in C++11
// constexpr functions. Example:
//
// constexpr double Divide(double a, double b) {
// return ASTC_CONSTEXPR_ASSERT(b != 0), a / b;
// }
//
// This macro is based on ABSL_ASSERT.
#ifdef NDEBUG
#define ASTC_CONSTEXPR_ASSERT(expr) \
(false ? static_cast<void>(expr) : static_cast<void>(0))
#else
#define ASTC_CONSTEXPR_ASSERT(expr) \
((expr) ? static_cast<void>(0) : [] { assert(false && #expr); }())
#endif
#endif // ASTC_CODEC_BASE_UTILS_H_
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