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calculate the complex cosine
#include <stdio.h> #include <complex.h> int main( void ) { long double complex zlong=4.2 + I*2.34; double complex zdouble=(double complex)zlong; double result; result = ccos(zdouble); printf("ccos(%f + I*%f) = %f\n", creal(zdouble), cimag(zdouble), result); return 0; }
ccos(4.200000 + I*2.340000) = -2.568370