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cprojl (3)
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
This function projects a point in the plane onto the surface of a Rie-
mann 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 infinity on
the real axis.
CONFORMING TO
C99
NOTES
The glibc implementation is broken and does something entirely differ-
ent.
SEE ALSO
cabs(3), complex(7)
2002-07-28 CPROJ(3)
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