| .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| .\" Distributed under GPL |
| .\" |
| .TH CPROJ 3 2010-06-10 "" "Linux Programmer's Manual" |
| .SH NAME |
| cproj, cprojf, cprojl \- project into Riemann Sphere |
| .SH SYNOPSIS |
| .B #include <complex.h> |
| .sp |
| .BI "double complex cproj(double complex " z ");" |
| .br |
| .BI "float complex cprojf(float complex " z ");" |
| .br |
| .BI "long double complex cprojl(long double complex " z ");" |
| .sp |
| Link with \fI\-lm\fP. |
| .SH DESCRIPTION |
| This function projects a point in the plane onto the surface of a |
| Riemann Sphere, the one-point compactification of the complex plane. |
| Each finite point |
| .I z |
| projects to |
| .I z |
| itself. |
| Every complex infinite value is projected to a single infinite value, |
| namely to positive infinity on the real axis. |
| .SH VERSIONS |
| These functions first appeared in glibc in version 2.1. |
| .SH "CONFORMING TO" |
| C99. |
| .SH NOTES |
| In glibc 2.11 and earlier, the implementation does something different |
| (a \fIstereographic\fP projection onto a Riemann Sphere). |
| .\" http://sources.redhat.com/bugzilla/show_bug.cgi?id=10401 |
| .SH "SEE ALSO" |
| .BR cabs (3), |
| .BR complex (7) |
