Semiconductor & Computer Engineering
From WikiChip
Difference between revisions of "binary literal"
(Created page with "'''Binary literal''' is an integer whose value is represented in the source code using the binary number system. Binary literals are a feature supported in many progra...") |
|||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | '''Binary literal''' is an [[integer]] whose value is represented in the source code using the [[binary number system]]. Binary literals are a feature supported in many programming languages such as [[Java]], [[D]] and [[Python]] as well as | + | '''Binary literal''' is an [[integer]] whose value is represented in the source code using the [[binary number system]]. Binary literals are a feature supported in many programming languages such as [[Java]], [[D]] and [[Python]] as well as a compiler extension in [[C++]] and [[C]]. Binary literals typically start with '''0b''' or '''0B''' followed by a series of binary digits. |
| − | == Java == | + | == Programming languages == |
| + | === Java === | ||
Starting with [[Java 7]], binary literals are possible to be expressed using the 0b or 0B prefix. For example: | Starting with [[Java 7]], binary literals are possible to be expressed using the 0b or 0B prefix. For example: | ||
| Line 13: | Line 14: | ||
</source> | </source> | ||
| − | == Python == | + | === Python === |
Starting with Python 2.6, binary literals support was added via the "0b" and "0B" prefixes.<ref>[http://docs.python.org/release/3.2.3/reference/lexical_analysis.html#integerliterals 2. Lexical analysis]</ref> | Starting with Python 2.6, binary literals support was added via the "0b" and "0B" prefixes.<ref>[http://docs.python.org/release/3.2.3/reference/lexical_analysis.html#integerliterals 2. Lexical analysis]</ref> | ||
| − | == Lisp == | + | === Lisp === |
Lisp supports binary literals to represent integers and rational values via the '''#b''' prefix, for example: | Lisp supports binary literals to represent integers and rational values via the '''#b''' prefix, for example: | ||
| Line 26: | Line 27: | ||
</source> | </source> | ||
| − | == C++ and C == | + | === C++ and C === |
| − | Binary literals already exist in the C++ and C languages in the form of non-standard compiler extensions<ref>[http://gcc.gnu.org/onlinedocs/gcc/Binary-constants.html 6.62 Binary constants using the ‘0b’ prefix]</ref>. They are prefixed with 0b or 0B followed by a series | + | Binary literals already exist in the C++ and C languages in the form of non-standard compiler extensions<ref>[http://gcc.gnu.org/onlinedocs/gcc/Binary-constants.html 6.62 Binary constants using the ‘0b’ prefix]</ref>. They are prefixed with 0b or 0B followed by a series of binary digits. Binary literals have also been proposed<ref>[http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3472.pdf C++14 N3472 Binary Literals in the C++ Core Language]</ref> as a core language addition in [[C++14]]. |
| + | |||
| + | ==hardware description language== | ||
| + | {{empty section}} | ||
== References == | == References == | ||
{{reflist}} | {{reflist}} | ||
Latest revision as of 00:06, 19 January 2016
Binary literal is an integer whose value is represented in the source code using the binary number system. Binary literals are a feature supported in many programming languages such as Java, D and Python as well as a compiler extension in C++ and C. Binary literals typically start with 0b or 0B followed by a series of binary digits.
Contents
Programming languages[edit]
Java[edit]
Starting with Java 7, binary literals are possible to be expressed using the 0b or 0B prefix. For example:
//an octet value
byte b = (byte)0b00010101;
//a 32-bit integer value
int i = 0b001101010110101010001111011101;
int i2 = 0b1110;
Python[edit]
Starting with Python 2.6, binary literals support was added via the "0b" and "0B" prefixes.[1]
Lisp[edit]
Lisp supports binary literals to represent integers and rational values via the #b prefix, for example:
#b10111
; rational values
#b1110/1111
C++ and C[edit]
Binary literals already exist in the C++ and C languages in the form of non-standard compiler extensions[2]. They are prefixed with 0b or 0B followed by a series of binary digits. Binary literals have also been proposed[3] as a core language addition in C++14.
hardware description language[edit]
 |
This section is empty; you can help add the missing info by editing this page. |