54 lines
1013 B
C
54 lines
1013 B
C
/* $NetBSD: cimag.c,v 1.2 2010/09/15 16:11:29 christos Exp $ */
|
|
|
|
/*
|
|
* Written by Matthias Drochner <drochner@NetBSD.org>.
|
|
* Public domain.
|
|
*
|
|
* imported and modified include for newlib 2010/10/03
|
|
* Marco Atzeri <marco_atzeri@yahoo.it>
|
|
*/
|
|
|
|
/*
|
|
FUNCTION
|
|
<<cimag>>, <<cimagf>>---imaginary part
|
|
|
|
INDEX
|
|
cimag
|
|
INDEX
|
|
cimagf
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <complex.h>
|
|
double cimag(double complex <[z]>);
|
|
float cimagf(float complex <[z]>);
|
|
|
|
|
|
DESCRIPTION
|
|
These functions compute the imaginary part of <[z]>.
|
|
|
|
<<cimagf>> is identical to <<cimag>>, except that it performs
|
|
its calculations on <<floats complex>>.
|
|
|
|
RETURNS
|
|
The cimag functions return the imaginary part value (as a real).
|
|
|
|
PORTABILITY
|
|
<<cimag>> and <<cimagf>> are ISO C99
|
|
|
|
QUICKREF
|
|
<<cimag>> and <<cimagf>> are ISO C99
|
|
|
|
*/
|
|
|
|
|
|
#include <complex.h>
|
|
#include "../common/fdlibm.h"
|
|
|
|
double
|
|
cimag(double complex z)
|
|
{
|
|
double_complex w = { .z = z };
|
|
|
|
return (IMAG_PART(w));
|
|
}
|