1.\" $NetBSD: creal.3,v 1.4 2012/12/27 21:34:10 wiz Exp $ 2.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 3.Dd December 27, 2012 4.Dt CREAL 3 5.Os 6.Sh NAME 7.Nm creal , 8.Nm crealf , 9.Nm creall 10.Nd complex real functions 11.Sh SYNOPSIS 12.In complex.h 13.Ft double 14.Fn creal "double complex z" 15.Ft float 16.Fn crealf "float complex z" 17.Ft long double 18.Fn creall "long double complex z" 19.Sh DESCRIPTION 20These functions compute the real part of 21.Ar z . 22.Sh RETURN VALUES 23These functions return the real part value. 24.Sh ERRORS 25No errors are defined. 26.Sh APPLICATION USAGE 27For a variable 28.Ar z 29of type 30.Vt complex : 31.Bd -literal -offset indent 32z == creal(z) + cimag(z)*I 33.Ed 34.Sh SEE ALSO 35.Xr carg 3 , 36.Xr cimag 3 , 37.Xr conj 3 , 38.Xr cproj 3 , 39.St -p1003.1-2001 40.Aq Pa complex.h 41.Sh COPYRIGHT 42Portions of this text are reprinted and reproduced in electronic form 43from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology 44-- Portable Operating System Interface (POSIX), The Open Group Base 45Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of 46Electrical and Electronics Engineers, Inc and The Open Group. 47In the 48event of any discrepancy between this version and the original IEEE and 49The Open Group Standard, the original IEEE and The Open Group Standard 50is the referee document. 51The original Standard can be obtained online at 52http://www.opengroup.org/unix/online.html . 53