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HP-UX Reference > C
cproj(3M)Itanium(R)-based System OnlyHP-UX 11i Version 2: December 2007 Update |
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NAMEcproj(), cprojf(), cprojl(), cprojw(), cprojq() — functions that project all infinities onto the one on the positive real axis SYNOPSIS#include <complex.h> double complex cproj(double complex z); float complex cprojf(float complex z); long double complex cprojl(long double complex z); extended complex cprojw(extended complex z); quad complex cprojq(quad complex z); DESCRIPTIONThese functions are available only for Itanium-based systems. cproj() returns its argument z, except if the argument is a complex infinity (even if it is a complex infinity which has one infinite part and one NaN part), then cproj() returns a positive infinity on the real axis, with imaginary part copysign(0.0,cimag( z )). It is intended as an aide for modeling the Riemann sphere. cprojf() is a float complex version of cproj(); it takes a float complex argument and returns a float complex result. cprojl() is a long double complex version of cproj(); it takes a long double complex argument and returns a long double complex result. cprojw() is an extended complex version of cproj(); it takes an extended complex argument and returns an extended complex result. cprojq() is equivalent to cprojl() on HP-UX systems. These functions raise no exceptions. |
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