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cproj(3) [v7 man page]

CPROJ(3)						     Linux Programmer's Manual							  CPROJ(3)

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 infin- ity on the real axis. VERSIONS
These functions first appeared in glibc in version 2.1. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------------------------+---------------+---------+ |Interface | Attribute | Value | +----------------------------+---------------+---------+ |cproj(), cprojf(), cprojl() | Thread safety | MT-Safe | +----------------------------+---------------+---------+ CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008. 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 4.15 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 https://www.kernel.org/doc/man-pages/. 2015-04-19 CPROJ(3)

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CPROJ(3)                                                     Linux Programmer's Manual                                                    CPROJ(3)

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 infin- ity on the real axis. VERSIONS
These functions first appeared in glibc in version 2.1. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------------------------+---------------+---------+ |Interface | Attribute | Value | +----------------------------+---------------+---------+ |cproj(), cprojf(), cprojl() | Thread safety | MT-Safe | +----------------------------+---------------+---------+ CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008. 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 4.15 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 https://www.kernel.org/doc/man-pages/. 2015-04-19 CPROJ(3)
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