GNU/Linux |
CentOS 4.8 |
i386 |
casin(3) |
casin, casinf, casinl − complex arc sine
#include <complex.h>
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
The casin() function calculates the complex asin(). If y = casin(z), then z = csin(y). The real part of y is chosen in the interval [-pi/2,pi/2].
One has casin(z) = -i clog(iz+csqrt(1-z*z)).
C99
clog(3), ccos(3)
casin(3) |