FreeBSD-5.3/lib/msun/man/cimag.3

.\" Copyright (c) 2004 Stefan Farfeleder
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.\" $FreeBSD: src/lib/msun/man/cimag.3,v 1.1 2004/08/07 23:03:36 stefanf Exp $
.\"
.Dd Aug 7, 2004
.Dt CIMAG 3
.Os
.Sh NAME
.Nm cimag ,
.Nm cimagf ,
.Nm cimagl ,
.Nm conj ,
.Nm conjf ,
.Nm conjl ,
.Nm creal ,
.Nm crealf ,
.Nm creall
.Nd functions to manipulate complex numbers
.Sh LIBRARY
.Lb libm
.Sh SYNOPSIS
.In complex.h
.Ft double
.Fn cimag "double complex z"
.Ft float
.Fn cimagf "float complex z"
.Ft long double
.Fn cimagl "long double complex z"
.Ft double complex
.Fn conj "double complex z"
.Ft float complex
.Fn conjf "float complex z"
.Ft long double complex
.Fn conjl "long double complex z"
.Ft double
.Fn creal "double complex z"
.Ft float
.Fn crealf "float complex z"
.Ft long double
.Fn creall "long double complex z"
.Sh DESCRIPTION
Let
.Sm off
.Fa a + b * Em i
.Sm on
denote the complex number
.Ar z .
.Pp
The
.Fn cimag
functions return the imaginary part
.Fa b .
.Pp
The
.Fn conj
functions return the complex conjugate
.Sm off
.Fa a - b * Em i .
.Sm on
.Pp
The
.Fn creal
functions return the real part
.Fa a .
.Sh STANDARDS
The
.Fn cimag ,
.Fn conj
and
.Fn creal
functions conform to
.St -isoC-99 .
.Sh HISTORY
The
.Fn cimag ,
.Fn conj
and
.Fn creal
functions first appeared in
.Fx 5.3 .