mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-25 21:10:04 +00:00
8d49fb2f4d
This PR extends the RandomGenerator interface and fixes the PseudoRandomGenerator class. It: - Fixes a problem that made the RandomUint32 of PseudoRandomGenerator segfault. - Adds the RandomUint64 function to RandomGenerator and PseudoRandomGenerator. Fixes #3805.
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
// Copyright (c) 2019 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
|
|
//
|
|
// 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 "source/fuzz/pseudo_random_generator.h"
|
|
|
|
#include <cassert>
|
|
|
|
namespace spvtools {
|
|
namespace fuzz {
|
|
|
|
PseudoRandomGenerator::PseudoRandomGenerator(uint32_t seed) : mt_(seed) {}
|
|
|
|
PseudoRandomGenerator::~PseudoRandomGenerator() = default;
|
|
|
|
uint32_t PseudoRandomGenerator::RandomUint32(uint32_t bound) {
|
|
assert(bound > 0 && "Bound must be positive");
|
|
return std::uniform_int_distribution<uint32_t>(0, bound - 1)(mt_);
|
|
}
|
|
|
|
uint64_t PseudoRandomGenerator::RandomUint64(uint64_t bound) {
|
|
assert(bound > 0 && "Bound must be positive");
|
|
return std::uniform_int_distribution<uint64_t>(0, bound - 1)(mt_);
|
|
}
|
|
|
|
bool PseudoRandomGenerator::RandomBool() {
|
|
return static_cast<bool>(std::uniform_int_distribution<>(0, 1)(mt_));
|
|
}
|
|
|
|
uint32_t PseudoRandomGenerator::RandomPercentage() {
|
|
// We use 101 because we want a result in the closed interval [0, 100], and
|
|
// RandomUint32 is not inclusive of its bound.
|
|
return RandomUint32(101);
|
|
}
|
|
|
|
double PseudoRandomGenerator::RandomDouble() {
|
|
return std::uniform_real_distribution<double>(0.0, 1.0)(mt_);
|
|
}
|
|
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|