Compute the complex hyperbolic sine
#include <complex.h> double complex csinh( double complex z ); float complex csinhf( float complex z ); long double complex csinhl( long double complex z );
These functions compute the complex hyperbolic sine of the number specified by z.
To check for error situations, use feclearexcept() and fetestexcept(). For example:
The complex hyperbolic sine of z.
| If z is: | These functions return: | Errors: |
|---|---|---|
| 0 + 0i | 0 + 0i | — |
| 0 + Infi | ±0 + NaNi, where the sign of the real part is unspecified | FE_INVALID |
| 0 + NaNi | ±0 + NaNi | — |
| x + Infi, for any positive finite x | NaN + NaNi | |
| x + NaNi, for any positive finite x | NaN + NaNi | — |
| Inf + 0i | Inf + 0i | — |
| Inf + yi, for any positive finite y | -Inf + cis(y) | — |
| Inf + Infi | ±Inf + NaNi, where the sign of the real part is unspecified | FE_INVALID |
| Inf + NaNi | ±Inf + NaNi, where the sign of the real part is unspecified | — |
| NaN + 0i | NaN + 0i | — |
| NaN + yi, for any finite nonzero y | NaN + NaNi | — |
| NaN + NaNi | NaN + NaNi | — |
where cis(y) is cos(y) + i sin(y)
These functions raise FE_INEXACT if the FPU reports that the result can't be exactly represented as a floating-point number.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |