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cproj(3m)

Mathematical Library Functions                                       cproj(3M)



NAME
       cproj, cprojf, cprojl - complex projection functions

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <complex.h>

       double complex cproj(double complex z);


       float complex cprojf(float complex z);


       long double complex cprojl(long double complex z);

DESCRIPTION
       These  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, then cproj(z) is equivalent to:

         INFINITY + I * copysign(0.0, cimag(z))


RETURN VALUES
       These functions return the value of the  projection  onto  the  Riemann
       sphere.

ERRORS
       No errors are defined.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i)


       ATTRIBUTE  TYPEATTRIBUTE  VALUE _ Interface StabilityCommitted _ Avail‐
       abilitysystem/library/math  _  MT-LevelMT-Safe  _   StandardSee   stan‐
       dards(7).


SEE ALSO
       creal(3M),    complex.h(3HEAD),    carg(3M),    cimag(3M),    conj(3M),
       attributes(7), standards(7)



Solaris 11.4                     27 Sept 2016                        cproj(3M)
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