casinl3
Complex arc sine
Part of casin(3).
Usage
double complex
casin(double
complex
z);
float
complex
casinf(float
complex
z);
long
double
complex
casinl(long
double
complex
z);
Library
Math library (libm, -lm)
Overview
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))
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| casin(), casinf(), casinl() | Thread safety | MT-Safe |
History
- Arch Linux 2026-11-01: the text shown here
- Debian 13 (Trixie)
- Debian 12 (Bookworm)
- Debian 11 (Bullseye)
- Debian 10 (Buster)
- Debian 9 (Stretch)
- Debian 8 (Jessie)
- Debian 7 (Wheezy)
- Debian 6.0 (Squeeze)
- Debian 5.0 (Lenny)
- Debian 4.0 (Etch)
- Debian 3.1 (Sarge)