casinl

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);


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)



				  2002-07-28			     CASIN(3)