CASIN(3) complex math routines CASIN(3)

NAME casin, casinf, casinl - complex arc sine

SYNOPSIS #include <complex.h>

double complex casin(double complex z); float complex casinf(float complex z); long double complex casinl(long double complex z);

Link with -lm.

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 ccos(3), clog(3), complex(7)

2002-07-28 CASIN(3)