cprojf, cproj, cprojl

 

C

Language

Standard Library

Type support

Dynamic memory management

Error handling

Program utilities

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

 

Numerics

Common mathematical functions

Floating-point environment

Complex number arithmetics

Random number generation

Type-generic math

 

Complex number arithmetic

Types and the imaginary constant
complex Complex_I CMPLX	imaginary Imaginary_I I
Manipulation
cimag creal carg	conj cproj
Power and exponential functions
cexp clog	cpow csqrt
Trigonometric functions
ccos csin ctan	cacos casin catan
Hyperbolic functions
ccosh csinh ctanh	cacosh casinh catanh

 

Defined in header <complex.h>
float       cprojf( float complex z );		(since C99)
double      cproj( double complex z );		(since C99)
long double cprojl( long double complex z );		(since C99)

Computes the projection of z on the Riemann sphere.

Parameters

z

-

complex argument

Return value

The projection of z on the Riemann sphere.

Example

Run this code

#include <stdio.h>
#include <complex.h>
#include <math.h>
 
int main(void)
{
    double complex z = cproj(INFINITY+2.0*I);
    printf("%.1f%+.1fi\n", creal(z),cimag(z));
 
    return 0;
}

Output:

inf+0.0i

See also

C++ documentation for proj