csin(), csinf(), csinl()

Updated: May 06, 2022

Compute the complex sine

Synopsis:

#include <complex.h>

double complex csin( double complex z );

float complex csinf( float complex z );

long double complex csinl( long double complex z );

Arguments:

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

Library:

libm
The general-purpose math library.
libm-sve
(QNX Neutrino 7.1 or later) A library that optimizes the code for ARMv8.2 chips that have Scalable Vector Extension hardware.

Your system requirements will determine how you should work with these libraries:

Note: Compile your program with the -fno-builtin option to prevent the compiler from using a built-in version of the function.

Description:

These functions compute the complex sine of z. The sine is an entire function on the complex plane, and has no branch cuts.

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

Returns:

The complex sine of z. Errors and special cases are handled as if the operation were implemented as -i * csinh(i * z).

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

Classification:

C11, POSIX 1003.1

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