6.2.55 crealf Function

Calculates the real part of a single precision complex value.

Include

<complex.h>

Prototype

float complex crealf(float complex z);

Argument

z

value for which to return the real part

Return Value

Returns the real part of the single precision complex value z.

Example

See the notes at the beginning of this chapter or section for information on using printf() or scanf() (and other functions reading and writing the stdin or stdout streams) in the example code.

#include <stdio.h>
#include <complex.h>

int main(void)
{
  float complex x;

  x = -2.0 + 1.0*I;
  printf("The real part of %f + %fi is %f\n", crealf(x), cimagf(x), crealf(x));
}

Example Output

The real part of -2.000000 + 1.000000i is -2.000000