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CentOS 7.0 - man page for casin (centos section 3)

CASIN(3)			    Linux Programmer's Manual				 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  arc  sine  of	z.  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))

VERSIONS
       These functions first appeared in glibc in version 2.1.

CONFORMING TO
       C99.

SEE ALSO
       clog(3), csin(3), complex(7)

COLOPHON
       This page is part of release 3.53 of the Linux man-pages project.  A  description  of  the
       project,     and    information	  about    reporting	bugs,	 can	be    found    at
       http://www.kernel.org/doc/man-pages/.

					    2008-08-11					 CASIN(3)


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