1 .\" $OpenBSD: cproj.3,v 1.4 2013/11/03 18:28:27 martynas Exp $
3 .\" Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
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17 .Dd $Mdocdate: November 3 2013 $
24 .Nd compute projection onto Riemann sphere
28 .Fn cproj "double complex z"
30 .Fn cprojf "float complex z"
31 .Ft long double complex
32 .Fn cprojl "long double complex z"
39 functions compute a projection of
41 onto the Riemann sphere.
50 for all finite complex numbers.
53 has an infinite part (even if the other part is \*(Na),
54 they return the equivalent of:
55 .Bd -literal -offset indent
56 INFINITY + I * copysign(0.0, cimag(z))