6.2.32 ccosl Function
Calculates the complex cosine function of a long double precision complex value.
Include
<complex.h>
Prototype
long double complex ccosl(long double complex z);
Argument
-
z
- value for which to return the complex cosine
Return Value
Returns the complex cosine 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)
{
long double complex x, y;
x = -2.0 + 1.0*I;
y = ccosl(x);
printf("The complex cosine of %Lf + %Lfi is %Lf + %Lfi\n", creall(x), cimagl(x), creall(y), cimagl(y));
}
Example Output
The complex cosine of -2.000000 + 1.000000i is -0.642148 + 1.068607i