Complex floating-point type
A complex floating-point type represents complex numbers with real and imaginary components, using floating-point values for those components.
Modern C, Third Edition
A complex type is a C arithmetic type representing a complex number with real and imaginary components based on a corresponding real floating-point type.
- How it is used
- Classifies complex numbers as one of C’s four principal numeric classes and supports their construction and component access.
- How deep it goes
- Defines representation, construction, portability, and component access, but stops short of detailed complex arithmetic.
- Examples
- Uses CMPLX(0.5, 0.5), 0.5 + 0.5*I, creal, cimag, and the nonstandard 0.5i literal as concrete examples.
- What you can do after
- Constructs portable complex constants and extracts their real and imaginary components while recognizing platform and comparison constraints.
Read how Modern C, Third Edition explains complex floating-point type →
Modern C
A complex number is a number expressible as the sum of a real component and an imaginary component.
- How it is used
- Classifies floating-point values that carry real and imaginary components and provides syntax for constructing them.
- How deep it goes
- Defines the three complex precisions and demonstrates constant construction, but does not develop complex arithmetic functions.
- Examples
- Uses CMPLX, CMPLXF, CMPLXL, I, and expressions such as 0.5 + 0.5*I.
- What you can do after
- Apply it via C's complex.h macros to declare complex values and construct constants with selected precision.
The Quick Python Book, Fourth Edition
A complex number is a number consisting of a real component and an imaginary component, represented in Python with an imaginary component suffixed by j.
- How it is used
- Represents values with real and imaginary components and supports arithmetic or specialized numerical functions.
- How deep it goes
- Explains literal syntax, arithmetic, component attributes, object preservation, and cmath usage without formal mathematical treatment.
- Examples
- Demonstrates literals, multiplication, exponentiation, real and imaginary attributes, and cmath.sqrt(-1).
- What you can do after
- Apply complex arithmetic and inspect components, then call complex-capable functions through the cmath module.
Read how The Quick Python Book, Fourth Edition explains complex floating-point type →
Related concepts
- number typekind of · A number type is a programming-language or data-system type whose values represent numeric quantities and support defined numerical operations.
- arrayequivalent to · An array is an indexed, ordered collection of elements arranged in one or more dimensions, with elements accessed by position.
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