plan9 man page for casin

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

       These  functions  calculate  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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +-----------------------------+---------------+---------+
       |Interface		     | Attribute     | Value   |
       +-----------------------------+---------------+---------+
       |casin(), casinf(), casinl()  | Thread safety | MT-Safe |
       +-----------------------------+---------------+---------+
CONFORMING TO

       C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

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

COLOPHON

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       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

								    2015-04-19								  CASIN(3)