complex

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Atomic operations (C11)

Thread support (C11)

Technical Specifications

Numerics

Common mathematical functions

Floating-point environment

Complex number arithmetics

Random number generation

Type-generic math

Complex number arithmetic

Types and the imaginary constant
complex _Complex_I CMPLX	imaginary _Imaginary_I I
Manipulation
cimag creal carg	cabs conj cproj
Power and exponential functions
cexp clog	cpow csqrt
Trigonometric functions
ccos csin ctan	cacos casin catan
Hyperbolic functions
ccosh csinh ctanh	cacosh casinh catanh

Defined in header <complex.h>
#define complex _Complex		(since C99)

This macro expands to a type specifier used to identify complex types.

A program may undefine and perhaps then redefine the complex macro.

References

• C11 standard (ISO/IEC 9899:2011):

• 7.3.1/4 complex (p: 188)

• C99 standard (ISO/IEC 9899:1999):

• 7.3.1/2 complex (p: 170)

See also

imaginary (C99)

imaginary type macro (keyword macro)