ctanh(), ctanhf(), ctanhl()

Compute the complex hyperbolic tangent

Synopsis:

#include <complex.h>

double complex ctanh( double complex z );

float complex ctanhf( float complex z );

long double complex ctanhl( long double complex z );

Arguments:

z
The value that you want to get the complex hyperbolic tangent of.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

These functions compute the complex hyperbolic tangent of the number specified by z.

To check for error situations, use feclearexcept() and fetestexcept(). For example:

Returns:

The complex hyperbolic tangent of z.

If z is: These functions return: Errors:
0 + 0i 0 + 0i
0 + Infi 0 + NaNi FE_INVALID
x + Infi, for any nonzero, finite x NaN + NaNi FE_INVALID
0 + NaNi 0 + NaNi
x + NaNi, for any nonzero finite x NaN + NaNi
Inf + yi, for any finite positive y 1 - 0i
Inf + Infi 1 ± 0i, where the sign of the imaginary part is unspecified
Inf + NaNi 1 ± 0i, where the sign of the imaginary part is unspecified
NaN + 0i NaN + 0i
NaN + yi, for any nonzero y NaN + NaNi
NaN + NaNi NaN + NaNi

These functions raise FE_INEXACT if the FPU reports that the result can't be exactly represented as a floating-point number.

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes