SYNOPSIS
#include <complex.h> "double complex casin(double complex "z);
"float complex casinf(float complex "z);
"long double complex casinl(long double complex "z);
DESCRIPTION
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)).
"CONFORMING TO"
C99
"SEE ALSO"
clog(3), ccos(3)
