prepare.hpp
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// Boost.Convert test and usage example
// Copyright (c) 2009-2020 Vladimir Batov.
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
#ifndef BOOST_CONVERT_TEST_PREPARE_HPP
#define BOOST_CONVERT_TEST_PREPARE_HPP
#include <array>
#include <ctime>
#include <cstdlib>
// boostinspect:nounnamed
namespace { namespace local
{
// C1. 18 = 9 positive + 9 negative numbers with the number of digits from 1 to 9.
// Even though INT_MAX(32) = 2147483647, i.e. 10 digits (not to mention long int)
// we only test up to 9 digits as Spirit does not handle more than 9.
using strings = std::array<my_string, 18>; //C1
// Generate a random number string with N digits
std::string
gen_int(int digits, bool negative)
{
std::string result;
if (negative) // Prepend a '-'
result += '-';
result += '1' + (std::rand() % 9); // The first digit cannot be '0'
for (int i = 1; i < digits; ++i) // Generate the remaining digits
result += '0' + (std::rand()%10);
return result;
}
local::strings const&
get_strs()
{
static auto strings = local::strings();
static bool filled = false;
static bool negative = true;
if (!filled)
{
// Seed the random generator
std::srand(std::time(0));
for (size_t k = 0; k < strings.size(); ++k)
strings[k] = local::gen_int(k/2 + 1, negative = !negative).c_str();
filled = true;
}
return strings;
}
}}
#endif // BOOST_CONVERT_TEST_PREPARE_HPP