xtd::real< type_t > Struct Template Reference

Definition

template<typename type_t>
struct xtd::real< type_t >

Represents the real concept.

Definition

template<typename type_t>
concept xtd::real = xtd::real_single<type_t> || xtd::real_double<type_t> || xtd::real_decimal<type_t>;

Header

#include <xtd/real>

Namespace

xtd

Library

xtd.core

Examples

The following code shows how to use xtd::real concept

#include <xtd/xtd>
 
auto print_is_real(auto value) noexcept {
  println("{} ({}) {} real", value, type_of(value), real<decltype(value)> ? "is" : "is not");
}
 
auto main() -> int {
  print_is_real(42_s8);
  print_is_real(42_s16);
  print_is_real(42_s32);
  print_is_real(42_s64);
  print_is_real(42_u8);
  print_is_real(42_u16);
  print_is_real(42_u32);
  print_is_real(42_u64);
  print_is_real(42_z);
  print_is_real(42.84f);
  print_is_real(42.84);
  print_is_real(42.84l);
  print_is_real('a');
  print_is_real(true);
  print_is_real("string"_s);
  print_is_real("string");
  print_is_real(1_h + 12_min + 24_s + 48_ms);
  print_is_real(day_of_week::wednesday);
}
 
// This code produces the following output :
//
// 42 (signed char) is not real
// 42 (short) is not real
// 42 (int) is not real
// 42 (long long) is not real
// 42 (unsigned char) is not real
// 42 (unsigned short) is not real
// 42 (unsigned int) is not real
// 42 (unsigned long long) is not real
// 42 (unsigned long) is not real
// 42.84 (float) is real
// 42.84 (double) is real
// 42.84 (long double) is real
// true (bool) is not real
// string (xtd::basic_string<char, std::char_traits<char>, std::allocator<char>>) is not real
// string (char const*) is not real
// 01:12:24.0480000 (xtd::time_span) is not real
// wednesday (xtd::day_of_week) is not real

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The documentation for this struct was generated from the following file:

• xtd.core/include/xtd/real_.hpp