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/*
* Copyright 2019 Patrick Stotko
* 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 <cmath>
#include <iostream>
#include <stdgpu/contract.h> // STDGPU_EXPECTS, STDGPU_ENSURES
float
safe_sqrt(const float x)
{
STDGPU_EXPECTS(x >= 0.0F);
// cppcheck-suppress invalidFunctionArg
float result = std::sqrt(x);
STDGPU_ENSURES(result >= 0.0F);
return result;
}
int
main()
{
std::cout << "In debug mode, a pre-condition failure will be printed right after this line." << std::endl
<< std::endl;
float sqrt_m1 = safe_sqrt(-1.0F);
std::cout << std::endl
<< "This line is only visible when the contracts are deactivated (release mode) : safe_sqrt(-1.0f) = "
<< sqrt_m1 << std::endl;
}
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