NAME
casin, casinf,
casinl —
complex circular 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(),
casinf()
and
casinl()
functions compute the complex circular arc sine of
z.
For all complex floating-point numbers z,
casin(z) = -i clog(iz + csqrt(1 - z^2)).
RETURN VALUES
The casin(),
casinf() and casinl()
functions return the complex circular arc sine of z
with unbounded imaginary part, and real part in the interval [-Pi/2,
Pi/2].
SEE ALSO
STANDARDS
The casin(),
casinf() and casinl()
functions conform to ISO/IEC 9899:1999
(“ISO C99”).