Manpage of CPROJ
CPROJSection: Linux Programmer's Manual (3)
NAMEcproj, cprojf, cprojl - project into Riemann Sphere
double complex cproj(double complex z);
float complex cprojf(float complex z);
long double complex cprojl(long double complex z);
DESCRIPTIONThese 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 zprojects to zitself. Every complex infinite value is projected to a single infinite value, namely to positive infinity on the real axis.
VERSIONSThese functions first appeared in glibc in version 2.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|cproj(), cprojf(), cprojl()||Thread safety||MT-Safe|
CONFORMING TOC99, POSIX.1-2001, POSIX.1-2008.
NOTESIn glibc 2.11 and earlier, the implementation does something different (a stereographicprojection onto a Riemann Sphere).
SEE ALSOcabs(3), complex(7)
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