====== conj ======
<code c>
double complex conj(double complex z);
</code>

==== description of conj ====
calculate the complex conjugate

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

int main( void )
{
   long double complex z = -1.11 - I*2.22;
   long double result;
   result = conjl(z);
   printf("conjl of %lf + %lf*I is %lf + %lf*I\n",creall(z), cimagl(z), result);
   return 0;
}

</code>

===== output of conj c example =====
    conjl of -0.000000 + 20000732176748649000000000000000000000.000000*I is 0.000000 + -0.000000*I