cimag(3) on freebsd

NAME

cimag, cimagf, cimagl, conj, conjf, conjl, cproj, cprojf, cprojl, creal, crealf, creall – functions to manipulate complex numbers

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <complex.h>

double

cimag(double complex z);

float

cimagf(float complex z);

long double

cimagl(long double complex z);

double complex

conj(double complex z);

float complex

conjf(float complex z);

long double complex

conjl(long double complex z);

double complex

cproj(double complex z);

float complex

cprojf(float complex z);

long double complex

cprojl(long double complex z);

double

creal(double complex z);

float

crealf(float complex z);

long double

creall(long double complex z);

DESCRIPTION

Let a,+,b,*i denote the complex number z.

The creal() functions return the real part a, and the cimag() functions return the imaginary part b.

The conj() functions return the complex conjugate a,-,b,*i.

The cproj() functions return the projection onto the Riemann sphere. If z contains an infinite component, then the result is 0*i, where the (zero) imaginary part of the result has the same sign as b. Otherwise, the result is z.

These functions do not signal any floating point exceptions.

STANDARDS

The cimag(), conj(), cproj(), and creal() functions conform to ISO/IEC 9899:1999 (“ISO C99”).

HISTORY