Some programming languages provide a complex data type for complex number storage and arithmetic as a built-in (primitive) data type.
In some programming environments the term complex data type (in contrast to primitive data types) is a synonym for the composite data type.
A complex variable or value is usually represented as a pair of floating-point numbers. Languages that support a complex data type usually provide special syntax for building such values, and extend the basic arithmetic operations ('+', '−', '×', '÷') to act on them. These operations are usually translated by the compiler into a sequence of floating-point machine instructions or into library calls. Those languages may also provide support for other operations, such as formatting, equality testing, etc. As in mathematics, those languages often interpret a floating-point value as equivalent to a complex value with a zero imaginary part.
complextemplate class as well as complex-math functions in the
complex64(each component is 32-bit float) and
complex128(each component is 64-bit float).
complextype. Imaginary number literals can be specified by appending a "j". Complex-math functions are provided in the standard library module
?(sqrt-1)#C(01); the result of (sqrt -1)
sin) are included in the language specification. Their implementation is however optional in the R5RS standard, while in R6RS is mandatory.
PRINT SQRT(-4) 2i
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COMPLEX data type was provided in FORTRAN IV.
Common Lisp (CL) is a dialect of the Lisp programming language, published in ANSI standard document ANSI INCITS 226-1994 (S20018). The Common Lisp HyperSpec, a hyperlinked HTML version, has been derived from the ANSI Common Lisp standard.
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In computer science, primitive data type is either of the following:
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This article compares a large number of programming languages by tabulating their data types, their expression, statement, and declaration syntax, and some common operating-system interfaces.
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