CPROJSection: Linux Programmer's Manual (3)
Index Return to Main Contents
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);
DESCRIPTIONThis 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.
VERSIONSThese functions first appeared in glibc in version 2.1.
NOTESThe glibc implementation is broken and does something entirely different.
SEE ALSOcabs(3), complex(7)
COLOPHONThis page is part of release 3.21 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/.