xtd 0.2.0
format_floating_point.cpp

Show how to use format xtd::format class with floating points.

#include <xtd/console>
#include <xtd/double_object>
#include <xtd/environment>
#include <xtd/single_object>
#include <xtd/format>
using namespace xtd;
enum class cap {title, middle, end};
template<typename number_t>
auto print_floating_point(const string& text, number_t value, cap c) {
if (c == cap::title)
console::out
<< "┌─────────────────────────────────────┬────────────┬──────────────────────────────────────────────────────────────────┐" << environment::new_line
<< "│ floating_point │ format │ representation │" << environment::new_line
<< "├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {} │ " << format("{}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:b} │ " << format("{:b}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:B} │ " << format("{:B}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:c} │ " << format("{:c}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:C} │ " << format("{:C}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:e} │ " << format("{:e}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:E} │ " << format("{:E}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:f} │ " << format("{:f}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:F} │ " << format("{:F}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:g} │ " << format("{:g}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:G} │ " << format("{:G}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:n} │ " << format("{:n}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:N} │ " << format("{:N}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:p} │ " << format("{:p}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:P} │ " << format("{:P}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:x} │ " << format("{:x}", value).pad_right(64) << " │" << environment::new_line;
console::out << "│ " << text.pad_right(35) << " │ {:X} │ " << format("{:X}", value).pad_right(64) << " │" << environment::new_line;
if (c != cap::end)
console::out << "├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤" << environment::new_line;
else
console::out << "└─────────────────────────────────────┴────────────┴──────────────────────────────────────────────────────────────────┘" << environment::new_line;
}
auto main() -> int {
std::locale::global(std::locale {"en_US.UTF-8"}); // change to us for currency
print_floating_point(".0", .0, cap::title);
print_floating_point("12.345f", 12.345f, cap::middle);
print_floating_point("3.1415e-4", 3.1415e-4, cap::middle);
print_floating_point("double_object::positive_infinity", double_object::positive_infinity, cap::middle);
print_floating_point("single_object::negative_infinity", single_object::negative_infinity, cap::middle);
print_floating_point("double_object::NaN", double_object::NaN, cap::middle);
print_floating_point("single_object::min_value", single_object::min_value, cap::middle);
print_floating_point("double_object::max_value", double_object::max_value, cap::end);
}
// This code produces the following output :
//
// ┌─────────────────────────────────────┬────────────┬──────────────────────────────────────────────────────────────────┐
// │ floating_point │ format │ representation │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ .0 │ {} │ 0 │
// │ .0 │ {:b} │ 0 │
// │ .0 │ {:B} │ 0 │
// │ .0 │ {:c} │ $0.00 │
// │ .0 │ {:C} │ $0.00 │
// │ .0 │ {:e} │ 0.000000e+00 │
// │ .0 │ {:E} │ 0.000000E+00 │
// │ .0 │ {:f} │ 0.00 │
// │ .0 │ {:F} │ 0.00 │
// │ .0 │ {:g} │ 0 │
// │ .0 │ {:G} │ 0 │
// │ .0 │ {:n} │ 0.00 │
// │ .0 │ {:N} │ 0.00 │
// │ .0 │ {:p} │ 0.00 % │
// │ .0 │ {:P} │ 0.00 % │
// │ .0 │ {:x} │ 0x0p+0 │
// │ .0 │ {:X} │ 0x0p+0 │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ 12.345f │ {} │ 12.345 │
// │ 12.345f │ {:b} │ 1000001010001011000010100011111 │
// │ 12.345f │ {:B} │ 1000001010001011000010100011111 │
// │ 12.345f │ {:c} │ $12.35 │
// │ 12.345f │ {:C} │ $12.35 │
// │ 12.345f │ {:e} │ 1.234500e+01 │
// │ 12.345f │ {:E} │ 1.234500E+01 │
// │ 12.345f │ {:f} │ 12.35 │
// │ 12.345f │ {:F} │ 12.35 │
// │ 12.345f │ {:g} │ 12.345 │
// │ 12.345f │ {:G} │ 12.345 │
// │ 12.345f │ {:n} │ 12.35 │
// │ 12.345f │ {:N} │ 12.35 │
// │ 12.345f │ {:p} │ 1234.50 % │
// │ 12.345f │ {:P} │ 1234.50 % │
// │ 12.345f │ {:x} │ 0x1.8b0a3ep+3 │
// │ 12.345f │ {:X} │ 0x1.8b0a3ep+3 │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ 3.1415e-4 │ {} │ 0.00031415 │
// │ 3.1415e-4 │ {:b} │ 11111100110100100101101000111111111001110111011010011100010000 │
// │ 3.1415e-4 │ {:B} │ 11111100110100100101101000111111111001110111011010011100010000 │
// │ 3.1415e-4 │ {:c} │ $0.00 │
// │ 3.1415e-4 │ {:C} │ $0.00 │
// │ 3.1415e-4 │ {:e} │ 3.141500e-04 │
// │ 3.1415e-4 │ {:E} │ 3.141500E-04 │
// │ 3.1415e-4 │ {:f} │ 0.00 │
// │ 3.1415e-4 │ {:F} │ 0.00 │
// │ 3.1415e-4 │ {:g} │ 0.00031415 │
// │ 3.1415e-4 │ {:G} │ 0.00031415 │
// │ 3.1415e-4 │ {:n} │ 0.00 │
// │ 3.1415e-4 │ {:N} │ 0.00 │
// │ 3.1415e-4 │ {:p} │ 0.03 % │
// │ 3.1415e-4 │ {:P} │ 0.03 % │
// │ 3.1415e-4 │ {:x} │ 0x1.4968ff9dda71p-12 │
// │ 3.1415e-4 │ {:X} │ 0x1.4968ff9dda71p-12 │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ double_object::positive_infinity │ {} │ inf │
// │ double_object::positive_infinity │ {:b} │ 111111111110000000000000000000000000000000000000000000000000000 │
// │ double_object::positive_infinity │ {:B} │ 111111111110000000000000000000000000000000000000000000000000000 │
// │ double_object::positive_infinity │ {:c} │ $0.00 │
// │ double_object::positive_infinity │ {:C} │ $0.00 │
// │ double_object::positive_infinity │ {:e} │ inf │
// │ double_object::positive_infinity │ {:E} │ inf │
// │ double_object::positive_infinity │ {:f} │ inf │
// │ double_object::positive_infinity │ {:F} │ inf │
// │ double_object::positive_infinity │ {:g} │ inf │
// │ double_object::positive_infinity │ {:G} │ inf │
// │ double_object::positive_infinity │ {:n} │ inf │
// │ double_object::positive_infinity │ {:N} │ inf │
// │ double_object::positive_infinity │ {:p} │ inf % │
// │ double_object::positive_infinity │ {:P} │ inf % │
// │ double_object::positive_infinity │ {:x} │ inf │
// │ double_object::positive_infinity │ {:X} │ inf │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ single_object::negative_infinity │ {} │ -inf │
// │ single_object::negative_infinity │ {:b} │ 11111111100000000000000000000000 │
// │ single_object::negative_infinity │ {:B} │ 11111111100000000000000000000000 │
// │ single_object::negative_infinity │ {:c} │ -$0.00 │
// │ single_object::negative_infinity │ {:C} │ -$0.00 │
// │ single_object::negative_infinity │ {:e} │ -inf │
// │ single_object::negative_infinity │ {:E} │ -inf │
// │ single_object::negative_infinity │ {:f} │ -inf │
// │ single_object::negative_infinity │ {:F} │ -inf │
// │ single_object::negative_infinity │ {:g} │ -inf │
// │ single_object::negative_infinity │ {:G} │ -inf │
// │ single_object::negative_infinity │ {:n} │ -inf │
// │ single_object::negative_infinity │ {:N} │ -inf │
// │ single_object::negative_infinity │ {:p} │ -inf % │
// │ single_object::negative_infinity │ {:P} │ -inf % │
// │ single_object::negative_infinity │ {:x} │ -inf │
// │ single_object::negative_infinity │ {:X} │ -inf │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ double_object::NaN │ {} │ nan │
// │ double_object::NaN │ {:b} │ 111111111111000000000000000000000000000000000000000000000000000 │
// │ double_object::NaN │ {:B} │ 111111111111000000000000000000000000000000000000000000000000000 │
// │ double_object::NaN │ {:c} │ $0.00 │
// │ double_object::NaN │ {:C} │ $0.00 │
// │ double_object::NaN │ {:e} │ nan │
// │ double_object::NaN │ {:E} │ nan │
// │ double_object::NaN │ {:f} │ nan │
// │ double_object::NaN │ {:F} │ nan │
// │ double_object::NaN │ {:g} │ nan │
// │ double_object::NaN │ {:G} │ nan │
// │ double_object::NaN │ {:n} │ nan │
// │ double_object::NaN │ {:N} │ nan │
// │ double_object::NaN │ {:p} │ nan % │
// │ double_object::NaN │ {:P} │ nan % │
// │ double_object::NaN │ {:x} │ nan │
// │ double_object::NaN │ {:X} │ nan │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ single_object::min_value │ {} │ -3.402823E+38 │
// │ single_object::min_value │ {:b} │ 11111111011111111111111111111111 │
// │ single_object::min_value │ {:B} │ 11111111011111111111111111111111 │
// │ single_object::min_value │ {:c} │ -$340,282,346,638,528,859,811,704,183,484,516,925,440.00 │
// │ single_object::min_value │ {:C} │ -$340,282,346,638,528,859,811,704,183,484,516,925,440.00 │
// │ single_object::min_value │ {:e} │ -3.402823e+38 │
// │ single_object::min_value │ {:E} │ -3.402823E+38 │
// │ single_object::min_value │ {:f} │ -340282346638528859811704183484516925440.00 │
// │ single_object::min_value │ {:F} │ -340282346638528859811704183484516925440.00 │
// │ single_object::min_value │ {:g} │ -3.402823e+38 │
// │ single_object::min_value │ {:G} │ -3.402823E+38 │
// │ single_object::min_value │ {:n} │ -340,282,346,638,528,859,811,704,183,484,516,925,440.00 │
// │ single_object::min_value │ {:N} │ -340,282,346,638,528,859,811,704,183,484,516,925,440.00 │
// │ single_object::min_value │ {:p} │ -inf % │
// │ single_object::min_value │ {:P} │ -inf % │
// │ single_object::min_value │ {:x} │ -0x1.fffffep+127 │
// │ single_object::min_value │ {:X} │ -0x1.fffffep+127 │
// ├─────────────────────────────────────┼────────────┼──────────────────────────────────────────────────────────────────┤
// │ double_object::max_value │ {} │ 1.79769313486232E+308 │
// │ double_object::max_value │ {:b} │ 111111111101111111111111111111111111111111111111111111111111111 │
// │ double_object::max_value │ {:B} │ 111111111101111111111111111111111111111111111111111111111111111 │
// │ double_object::max_value │ {:c} │ $0.00 │
// │ double_object::max_value │ {:C} │ $0.00 │
// │ double_object::max_value │ {:e} │ 1.797693e+308 │
// │ double_object::max_value │ {:E} │ 1.797693E+308 │
// │ double_object::max_value │ {:f} │ 179769313486231570814527423731704356798070567525844996598... .00 │
// │ double_object::max_value │ {:F} │ 179769313486231570814527423731704356798070567525844996598... .00 │
// │ double_object::max_value │ {:g} │ 1.79769313486232e+308 │
// │ double_object::max_value │ {:G} │ 1.79769313486232E+308 │
// │ double_object::max_value │ {:n} │ 179,769,313,486,231,570,814,527,423,731,704,356,798,070,... .00 │
// │ double_object::max_value │ {:N} │ 179,769,313,486,231,570,814,527,423,731,704,356,798,070,... .00 │
// │ double_object::max_value │ {:p} │ inf % │
// │ double_object::max_value │ {:P} │ inf % │
// │ double_object::max_value │ {:x} │ 0x1.fffffffffffffp+1023 │
// │ double_object::max_value │ {:X} │ 0x1.fffffffffffffp+1023 │
// └─────────────────────────────────────┴────────────┴──────────────────────────────────────────────────────────────────┘
xtd::box_floating_point< double >::NaN
static constexpr double NaN
Definition box_floating_point.hpp:59
xtd::box_floating_point< double >::positive_infinity
static constexpr double positive_infinity
Definition box_floating_point.hpp:65
xtd::box_floating_point< float >::negative_infinity
static constexpr float negative_infinity
Definition box_floating_point.hpp:62
xtd::box_integer::max_value
static constexpr type_t max_value
Represents the largest possible value of type_t. This field is constant.
Definition box_integer.hpp:67
xtd::box_integer::min_value
static constexpr type_t min_value
Represents the smallest possible value of type_t. This field is constant.
Definition box_integer.hpp:70
xtd::console::out
static std::ostream out
Gets the standard output stream. A std::basic_ostream<char_t> that represents the standard output str...
Definition console.hpp:52
xtd::environment::new_line
static xtd::string new_line() noexcept
Gets the newline string defined for this environment.
xtd::format
xtd::string format(const xtd::string &fmt, args_t &&... args)
Writes the text representation of the specified arguments list, to string using the specified format ...
Definition format.hpp:20
xtd::console_key::c
@ c
The C key.
Definition console_key.hpp:92
xtd::text
Contains classes that represent ASCII and Unicode character encodings; abstract base classes for conv...
Definition basic_string_builder.hpp:16
xtd
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition abstract_object.hpp:8
xtd::end
const_iterator end() const
Returns an iterator to the end.
Definition read_only_span.hpp:213
Generated on Sun May 18 2025 09:07:12 for xtd by Gammasoft. All rights reserved.