Calculates the sine of a complex number

#include <complex.h>
double complex csin ( double complex z  );
float complex csinf ( float complex z  );
long double complex csinl ( long double complex z  );

The csin( ) function returns the sine of its complex number argument z, which is equal to (e^iz - e^-iz)/2 x i.

Example

/* Demonstrate the exponential definition of the complex sine function. */
double complex z = 4.3 - 2.1 * I;
double complex c, d;

c = csin( z );
d = ( cexp( z * I ) - cexp( - z * I )) / (2 * I);

printf("The csin( ) function returns %.2f %+.2f \xD7 I.\n",
       creal(c), cimag(c) );
printf("Using the cexp( ) function, the result is %.2f %+.2f \xD7 I.\n",
       creal(d), cimag(d) );

This code produces the following output:

The csin( ) function returns -3.80 +1.61 x I.
Using the cexp( ) function, the result is -3.80 +1.61 x I.

See Also

ccos( ), ctan( ), cacos( ), casin( ), catan( )