carg3p
Complex argument functions
Usage
#include <complex.h>
double carg(double complex z); float cargf(float complex z); long double cargl(long double complex z);
Prolog
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
Overview
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2017 defers to the ISO C standard.
These functions shall compute the argument (also called phase angle) of z, with a branch cut along the negative real axis.
Return value
These functions shall return the value of the argument in the interval [-π, +π].
Errors
No errors are defined.
The following sections are informative.
Examples
None.
Application usage
None.
Rationale
None.
Future directions
None.