complex
From cppreference.com
| 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.
Example
Run this code
#include <stdio.h> #include <complex.h> #include <math.h> void print_complex(const char* note, complex z) { printf("%s %f + %f*i\n", note, creal(z), cimag(z)); } int main(void) { double complex z = -1.0 + 2.0*I; print_complex("z =", z); print_complex("z^2 =", z * z); double complex z2 = ccos(2.0 * carg(z)) + csin(2.0 * carg(z))*I; print_complex("z^2 =", cabs(z) * cabs(z) * z2); }
Output:
z = -1.000000 + 2.000000*i z^2 = -3.000000 + -4.000000*i z^2 = -3.000000 + -4.000000*i
References
- C17 standard (ISO/IEC 9899:2018):
- 7.3.1/4 complex (p: 136)
- 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
| (C99) |
imaginary type macro (keyword macro) |