projects / thirdparty / man-pages.git / blame
| Commit | Line | Data |
|---|---|---|
| fea681da | 1 | .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| 2297bf0e | 2 | .\" |
| 95fb8859 | 3 | .\" SPDX-License-Identifier: GPL-1.0-or-later |
| fea681da | 4 | .\" |
| 4c1c5274 | 5 | .TH cproj 3 (date) "Linux man-pages (unreleased)" |
| fea681da MK |
6 | .SH NAME |
| 7 | cproj, cprojf, cprojl \- project into Riemann Sphere | |
| 2af19291 AC |
8 | .SH LIBRARY |
| 9 | Math library | |
| 8fc3b2cf | 10 | .RI ( libm ", " \-lm ) |
| fea681da | 11 | .SH SYNOPSIS |
| c7db92b9 | 12 | .nf |
| fea681da | 13 | .B #include <complex.h> |
| 68e4db0a | 14 | .PP |
| fea681da | 15 | .BI "double complex cproj(double complex " z ");" |
| fea681da | 16 | .BI "float complex cprojf(float complex " z ");" |
| fea681da | 17 | .BI "long double complex cprojl(long double complex " z ");" |
| c7db92b9 | 18 | .fi |
| fea681da | 19 | .SH DESCRIPTION |
| 2d6c69df | 20 | These functions project a point in the plane onto the surface of a |
| fea681da | 21 | Riemann Sphere, the one-point compactification of the complex plane. |
| e5056894 MK |
22 | Each finite point |
| 23 | .I z | |
| 24 | projects to | |
| 25 | .I z | |
| 26 | itself. | |
| fea681da MK |
27 | Every complex infinite value is projected to a single infinite value, |
| 28 | namely to positive infinity on the real axis. | |
| f0d7ce1d MK |
29 | .SH VERSIONS |
| 30 | These functions first appeared in glibc in version 2.1. | |
| 1e505247 | 31 | .SH ATTRIBUTES |
| 3f1fe439 MK |
32 | For an explanation of the terms used in this section, see |
| 33 | .BR attributes (7). | |
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34 | .ad l |
| 35 | .nh | |
| 3f1fe439 MK |
36 | .TS |
| 37 | allbox; | |
| c466875e | 38 | lbx lb lb |
| 3f1fe439 MK |
39 | l l l. |
| 40 | Interface Attribute Value | |
| 41 | T{ | |
| 1e505247 PH |
42 | .BR cproj (), |
| 43 | .BR cprojf (), | |
| 1e505247 | 44 | .BR cprojl () |
| 3f1fe439 MK |
45 | T} Thread safety MT-Safe |
| 46 | .TE | |
| c466875e MK |
47 | .hy |
| 48 | .ad | |
| 49 | .sp 1 | |
| 3113c7f3 | 50 | .SH STANDARDS |
| 9a74e018 | 51 | C99, POSIX.1-2001, POSIX.1-2008. |
| 19c98696 | 52 | .SH NOTES |
| ca90d3f8 | 53 | In glibc 2.11 and earlier, the implementation does something different |
| 022671eb MK |
54 | (a |
| 55 | .I stereographic | |
| 56 | projection onto a Riemann Sphere). | |
| ca90d3f8 | 57 | .\" http://sources.redhat.com/bugzilla/show_bug.cgi?id=10401 |
| 47297adb | 58 | .SH SEE ALSO |
| fea681da | 59 | .BR cabs (3), |
| a8bda636 | 60 | .BR complex (7) |