newlib-cygwin/winsup/mingw/mingwex/complex/cexp.c

20 lines
367 B
C

/*
cexp.c
Contributed by Danny Smith
2003-10-20
*/
#include <math.h>
#include <complex.h>
/* cexp (x + I * y) = exp (x) * cos (y) + I * exp (x) * sin (y) */
double complex cexp (double complex Z)
{
double complex Res;
long double rho = exp (__real__ Z);
__real__ Res = rho * cos(__imag__ Z);
__imag__ Res = rho * sin(__imag__ Z);
return Res;
}