NAME | SYNOPSIS | DESCRIPTION | VERSIONS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

The Linux Programming Interface

CPROJ(3)                      Linux Programmer's Manual                      CPROJ(3)

NAME         top

       cproj, cprojf, cprojl - project into Riemann Sphere

SYNOPSIS         top

       #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         top

       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 z projects to z itself.  Every complex infinite value is projected to a
       single infinite value, namely to positive infinity on the real axis.

VERSIONS         top

       These functions first appeared in glibc in version 2.1.

CONFORMING TO         top

       C99.

NOTES         top

       In glibc 2.11 and earlier, the implementation does something different (a
       stereographic projection onto a Riemann Sphere).

SEE ALSO         top

       cabs(3), complex(7)

COLOPHON         top

       This page is part of release 3.32 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

                                      2010-06-10                             CPROJ(3)

HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface