NAME¶
cproj, cprojf, cprojl - project into Riemann Sphere
SYNOPSIS¶
#include <complex.h>
double complex cproj(double complex z);
float complex cprojf(float complex z);
long double complex cprojl(long double complex z);
Link with
-lm.
DESCRIPTION¶
These functions project a point in the plane onto the surface of a Riemann
Sphere, the one-point compactification of the complex plane. Each finite point
z projects to
z itself. Every complex infinite value is
projected to a single infinite value, namely to positive infinity on the real
axis.
VERSIONS¶
These functions first appeared in glibc in version 2.1.
ATTRIBUTES¶
Multithreading (see pthreads(7))¶
The
cproj(),
cprojf(), and
cprojl() functions are
thread-safe.
C99.
NOTES¶
In glibc 2.11 and earlier, the implementation does something different (a
stereographic projection onto a Riemann Sphere).
SEE ALSO¶
cabs(3),
complex(7)
COLOPHON¶
This page is part of release 3.74 of the Linux
man-pages project. A
description of the project, information about reporting bugs, and the latest
version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
