Section: Linux Programmer's Manual (3) Updated: 2008-08-11 Local index
casin, casinf, casinl - complex arc sine
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);
Link with -lm.
function calculates the complex arc sine of
If y = casin(z), then z = csin(y).
The real part of
is chosen in the interval [-pi/2,pi/2].
casin(z) = -i clog(iz + csqrt(1 - z * z))
These functions first appeared in glibc in version 2.1.
This page is part of release 3.27 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
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Time: 21:43:06 GMT, April 16, 2011