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);
[Note] Note

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)


  Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
Distributed under GPL