ceph/src/boost/libs/convert/test/printf_converter.cpp

   1 // Boost.Convert test and usage example
   2 // Copyright (c) 2009-2020 Vladimir Batov.
   3 // Use, modification and distribution are subject to the Boost Software License,
   4 // Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
   5
   6 #include "./test.hpp"
   7
   8 #if defined(BOOST_CONVERT_IS_NOT_SUPPORTED)
   9 int main(int, char const* []) { return 0; }
  10 #else
  11
  12 #include <boost/convert.hpp>
  13 #include <boost/convert/printf.hpp>
  14
  15 using std::string;
  16 using boost::convert;
  17
  18 namespace arg = boost::cnv::parameter;
  19
  20 int
  21 main(int, char const* [])
  22 {
  23     boost::cnv::printf cnv;
  24
  25     string const not_int_str = "not an int";
  26     string const     std_str = "-11";
  27     char const* const  c_str = "-12";
  28
  29     BOOST_TEST( -1 == convert<int>(not_int_str, cnv).value_or(-1));
  30     BOOST_TEST(-11 == convert<int>(std_str,     cnv).value_or(-1));
  31     BOOST_TEST(-12 == convert<int>(c_str,       cnv).value_or(-1));
  32
  33     BOOST_TEST("255" == convert<std::string>(255, cnv(arg::base = boost::cnv::base::dec)).value());
  34     BOOST_TEST( "ff" == convert<std::string>(255, cnv(arg::base = boost::cnv::base::hex)).value());
  35     BOOST_TEST("377" == convert<std::string>(255, cnv(arg::base = boost::cnv::base::oct)).value());
  36
  37     string s01 = convert<string>(12.3456, cnv(arg::precision = 6)).value();
  38     string s02 = convert<string>(12.3456, cnv(arg::precision = 3)).value();
  39
  40     BOOST_TEST(s01 == "12.345600");
  41     BOOST_TEST(s02 == "12.346");
  42
  43     return boost::report_errors();
  44 }
  45
  46 #endif