Updated: 2021/Apr/14

CPROJ(3) Library Functions Manual CPROJ(3)NAMEcproj,cprojf,cprojl- complex projection functionsSYNOPSIS#include<complex.h>doublecproj(double complex z); floatcprojf(float complex z); long doublecprojl(long double complex z);#include<tgmath.h>complex-floatingcproj(complex-floating z);DESCRIPTIONThese functions compute a projection of z onto the Riemann sphere: z projects to z, except that all complex infinities (even those with one infinite part and one NaN part) project to positive infinity on the real axis. If z has an infinite part, thencproj() shall be equivalent to: INFINITY + I * copysign(0.0, cimag(z))RETURNVALUESThese functions return the value of the projection onto the Riemann sphere.ERRORSNo errors are defined.SEEALSOcarg(3), cimag(3), conj(3), creal(3), IEEE Std 1003.1-2001 ("POSIX.1") <complex.h>COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . NetBSD 9.99 September 27, 2017 NetBSD 9.99