---
name: "std::literals"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/std::literals"
---

# std::literals(3)

ISO C++ inline namespace for literal suffixes.

## NAME

std::literals - ISO C++ inline namespace for literal suffixes.

## SYNOPSIS

### Namespaces

namespace **chrono\_literals**\

### Functions

constexpr chrono::day **operator''d** (unsigned long long \_\_d) noexcept\
 Literal suffix for creating chrono::day objects.  template\<char... \_Digits\> constexpr **chrono::hours** **operator''h** ()\
 Literal suffix for durations of type std::chrono::hours.  constexpr **chrono::duration**\< long double, **ratio**\< 3600, 1 \> \> **operator''h** (long double \_\_hours)\
 Literal suffix for durations representing non-integer hours.  template\<char... \_Digits\> constexpr **chrono::minutes** **operator''min** ()\
 Literal suffix for durations of type std::chrono::minutes.  constexpr **chrono::duration**\< long double, **ratio**\< 60, 1 \> \> **operator''min** (long double \_\_mins)\
 Literal suffix for durations representing non-integer minutes.  template\<char... \_Digits\> constexpr **chrono::milliseconds** **operator''ms** ()\
 Literal suffix for durations of type std::chrono::milliseconds.  constexpr **chrono::duration**\< long double, milli \> **operator''ms** (long double \_\_msecs)\
 Literal suffix for durations representing non-integer milliseconds.  template\<char... \_Digits\> constexpr **chrono::nanoseconds** **operator''ns** ()\
 Literal suffix for durations of type std::chrono::nanoseconds.  constexpr **chrono::duration**\< long double, nano \> **operator''ns** (long double \_\_nsecs)\
 Literal suffix for durations representing non-integer nanoseconds.  template\<char... \_Digits\> constexpr **chrono::seconds** **operator''s** ()\
 Literal suffix for durations of type std::chrono::seconds.  constexpr **chrono::duration**\< long double \> **operator''s** (long double \_\_secs)\
 Literal suffix for durations representing non-integer seconds.  constexpr **basic\_string\_view**\< char \> **operator''sv** (const char \*\_\_str, size\_t \_\_len) noexcept\
 constexpr **basic\_string\_view**\< char16\_t \> **operator''sv** (const char16\_t \*\_\_str, size\_t \_\_len) noexcept\
 constexpr **basic\_string\_view**\< char32\_t \> **operator''sv** (const char32\_t \*\_\_str, size\_t \_\_len) noexcept\
 constexpr **basic\_string\_view**\< wchar\_t \> **operator''sv** (const wchar\_t \*\_\_str, size\_t \_\_len) noexcept\
 template\<char... \_Digits\> constexpr **chrono::microseconds** **operator''us** ()\
 Literal suffix for durations of type std::chrono::microseconds.  constexpr **chrono::duration**\< long double, micro \> **operator''us** (long double \_\_usecs)\
 Literal suffix for durations representing non-integer microseconds.  constexpr chrono::year **operator''y** (unsigned long long \_\_y) noexcept\
 Literal suffix for creating chrono::year objects.

## Detailed Description

ISO C++ inline namespace for literal suffixes.

## Author

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