casin(), casinf(), casinl() — Calculate the complex arc sine
Standards
| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
C99
Single UNIX Specification, Version 3 |
both | z/OS® V1R7 a compiler that is designed to support C99
|
Format
#include <complex.h>
double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);General description
The casin() family
of functions compute the complex arc sine of z,
with branch cuts outside the interval [-1, +1] along the real axis.
Note: The
following table shows the viable formats for these functions. See IEEE binary floating-point for more information about IEEE
Binary Floating-Point.
| Function | Hex | IEEE |
|---|---|---|
| casin | X | X |
| casinf | X | X |
| casinl | X | X |
Returned value
The casin() family of functions return the complex arc sine value, in the range of a strip, mathematically unbounded along the imaginary axis and in the interval [- π/2, + π/2] along the real axis.