Active Standard

IEEE/ISO/IEC 60559-2020

ISO/IEC/IEEE International Standard - Floating-point arithmetic

This international standard specifies interchange and arithmetic formats and methods for binary and decimal floating-point arithmetic in computer programming environments. This standard specifies exception conditions and their default handling. An implementation of a floating-point system conforming to this standard may be realized entirely in software, entirely in hardware, or in any combination of software and hardware. For operations specified in the normative part of this standard, numerical results and exceptions are uniquely determined by the values of the input data, sequence of operations, and destination formats, all under user control.

Sponsor Committee
C/MSC - Microprocessor Standards Committee
Learn More
Status
Active Standard
Adoption of
754-2019
History
Published:
2020-05-08
Adopted:
2020-05-08

Working Group Details

Society
IEEE Computer Society
Learn More
Sponsor Committee
C/MSC - Microprocessor Standards Committee
Learn More
Working Group
754_WG - Working Group for Floating-Point Arithmetic
Learn More
IEEE Program Manager
Tom Thompson
Contact
Working Group Chair
David Hough
No Active Projects

754-2019

IEEE Standard for Floating-Point Arithmetic

This standard specifies interchange and arithmetic formats and methods for binary and decimal floating-point arithmetic in computer programming environments. This standard specifies exception conditions and their default handling. An implementation of a floating-point system conforming to this standard may be realized entirely in software, entirely in hardware, or in any combination of software and hardware. For operations specified in the normative part of this standard, numerical results and exceptions are uniquely determined by the values of the input data, sequence of operations, and destination formats, all under user control.

Learn More

754-1985

IEEE Standard for Binary Floating-Point Arithmetic

A family of commercially feasible ways for new systems to perform binary floating-point arithmetic is defined. This standard specifies basic and extended floating-point number formats; add, subtract, multiply, divide, square root, remainder, and compare operations; conversions between integer and floating-point formats; conversions between different floating-point formats; conversions between basic-format floating-point numbers and decimal strings; and floating-point exceptions and their handling, including nonnumbers.

Learn More

754-2008

IEEE Standard for Floating-Point Arithmetic

This standard specifies formats and methods for floating-point arithmetic in computer systems: standard and extended functions with single, double, extended, and extendable precision, and recommends formats for data interchange. Exception conditions are defined and standard handling of these conditions is specified.

Learn More

854-1987

IEEE Standard for Radix-Independent Floating-Point Arithmetic

A family of commercially feasible ways for new systems to perform floating-point arithmetic is defined. This standard specifies constraints on parameters defining values of basic and extended floating-point numbers; add, subtract, multiply, divide, square root, remainder, and compare operations; conversions between integers and floating-point numbers; conversions between different floating-point precisions; conversion between basic precision floating-point numbers and decimal strings; and floating-point exceptions and their handling, including nonnumbers. It is intended that an implementation of a floating-point system conforming to this standard can be realized entirely in software, entirely in hardware, or in any combination of software and hardware. Retrofitting issues are not considered.

Learn More

No Inactive-Withdrawn Standards
No Inactive-Reserved Standards
Newswire

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.