---
name: "std::decimal::decimal64"
section: "3cxx"
platform: "linux"
package: "libstdc++-12-doc"
version: "12.4.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/std::decimal::decimal64/3cxx"
---

# std::decimal::decimal64(3cxx)

3\.2.3 Class decimal64.

## NAME

std::decimal::decimal64 - 3.2.3 Class decimal64.

## SYNOPSIS

`#include <decimal>`

### Public Types

**typedef** float **\_\_decfloat64**\

### Public Member Functions

**decimal64** (\_\_decfloat64 **\_\_z**)\
 Conforming extension: Conversion from scalar decimal type.  **decimal64** (**decimal128** **d128**)\
 **decimal64** (**decimal32** **d32**)\
 **decimal64** (double \_\_r)\
 **decimal64** (float \_\_r)\
 **decimal64** (int **\_\_z**)\
 **decimal64** (long **\_\_z**)\
 **decimal64** (long double \_\_r)\
 **decimal64** (long long **\_\_z**)\
 **decimal64** (unsigned int **\_\_z**)\
 **decimal64** (unsigned long **\_\_z**)\
 **decimal64** (unsigned long long **\_\_z**)\
 \_\_decfloat64 **\_\_getval** (**void**)\
 **void** **\_\_setval** (\_\_decfloat64 \_\_x)\
 **operator long long** () const\
 **decimal64** & **operator\*=** (**decimal128** **\_\_rhs**)\
 **decimal64** & **operator\*=** (**decimal32** **\_\_rhs**)\
 **decimal64** & **operator\*=** (**decimal64** **\_\_rhs**)\
 **decimal64** & **operator\*=** (int **\_\_rhs**)\
 **decimal64** & **operator\*=** (long **\_\_rhs**)\
 **decimal64** & **operator\*=** (long long **\_\_rhs**)\
 **decimal64** & **operator\*=** (unsigned int **\_\_rhs**)\
 **decimal64** & **operator\*=** (unsigned long **\_\_rhs**)\
 **decimal64** & **operator\*=** (unsigned long long **\_\_rhs**)\
 **decimal64** & **operator++** ()\
 **decimal64** **operator++** (int)\
 **decimal64** & **operator+=** (**decimal128** **\_\_rhs**)\
 **decimal64** & **operator+=** (**decimal32** **\_\_rhs**)\
 **decimal64** & **operator+=** (**decimal64** **\_\_rhs**)\
 **decimal64** & **operator+=** (int **\_\_rhs**)\
 **decimal64** & **operator+=** (long **\_\_rhs**)\
 **decimal64** & **operator+=** (long long **\_\_rhs**)\
 **decimal64** & **operator+=** (unsigned int **\_\_rhs**)\
 **decimal64** & **operator+=** (unsigned long **\_\_rhs**)\
 **decimal64** & **operator+=** (unsigned long long **\_\_rhs**)\
 **decimal64** & **operator--** ()\
 **decimal64** **operator--** (int)\
 **decimal64** & **operator-=** (**decimal128** **\_\_rhs**)\
 **decimal64** & **operator-=** (**decimal32** **\_\_rhs**)\
 **decimal64** & **operator-=** (**decimal64** **\_\_rhs**)\
 **decimal64** & **operator-=** (int **\_\_rhs**)\
 **decimal64** & **operator-=** (long **\_\_rhs**)\
 **decimal64** & **operator-=** (long long **\_\_rhs**)\
 **decimal64** & **operator-=** (unsigned int **\_\_rhs**)\
 **decimal64** & **operator-=** (unsigned long **\_\_rhs**)\
 **decimal64** & **operator-=** (unsigned long long **\_\_rhs**)\
 **decimal64** & **operator/=** (**decimal128** **\_\_rhs**)\
 **decimal64** & **operator/=** (**decimal32** **\_\_rhs**)\
 **decimal64** & **operator/=** (**decimal64** **\_\_rhs**)\
 **decimal64** & **operator/=** (int **\_\_rhs**)\
 **decimal64** & **operator/=** (long **\_\_rhs**)\
 **decimal64** & **operator/=** (long long **\_\_rhs**)\
 **decimal64** & **operator/=** (unsigned int **\_\_rhs**)\
 **decimal64** & **operator/=** (unsigned long **\_\_rhs**)\
 **decimal64** & **operator/=** (unsigned long long **\_\_rhs**)\

## Detailed Description

3\.2.3 Class decimal64.

## Constructor & Destructor Documentation

### std::decimal::decimal64::decimal64 (\_\_decfloat64 \_\_z)` [inline]`

Conforming extension: Conversion from scalar decimal type.

## Author

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