crealf, creal, creall

 

C

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Complex number arithmetic

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

 

Defined in header <complex.h>
float       crealf( float complex z );		(since C99)
double      creal( double complex z );		(since C99)
long double creall( long double complex z );		(since C99)

Returns the real part of z.

Parameters

z

-

complex argument

Return value

The real part of z.

Example

Run this code

#include <stdio.h>
#include <complex.h>
 
int main(void)
{    
    double complex z = 1.0 + 2.0*I;
    printf("%f%+fi\n", creal(z), cimag(z));
 
    return 0;
}

Output:

1.000000+2.000000i

See also

cimagcimagfcimagl (C99)(C99)(C99)	computes the imaginary part a complex number (function)
C++ documentation for real2