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cproj, cprojf, cprojl - complex projection functions
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);
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))
These functions return the value of the projection onto the Riemann sphere.
See attributes(5) for descriptions of the following attributes:
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carg(3M), cimag(3M), complex.h(3HEAD), conj(3M), creal(3M), attributes(5), standards(5)
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