6.2.66 ctan Function

Calculates the complex tangent function of a double precision complex value.

Include

<complex.h>

Prototype

double complex ctan(double complex z);

Argument

z

value for which to return the complex tangent

Return Value

Returns the complex tangent of 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)
{
  double complex x, y;

  x = -2.0 + 1.0*I;
  y = ctan(x);
  printf("The complex tangent of %f + %fi is %f + %fi\n", creal(x), cimag(x), creal(y), cimag(y));
}

Example Output

The complex tangent of -2.000000 + 1.000000i is 0.243458 + 1.166736i