.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 19:52:39 1993 by Rik Faith (faith@cs.unc.edu)
.\"
.\" Traducido al castellano (con permiso) por:
.\" Sebastian Desimone (chipy@argenet.com.ar) (desimone@fasta.edu.ar)
.\" Translation fixed Thu Apr 23 11:10:07 CEST 1998 by Gerardo
.\" Aburruzaga García <gerardo.aburruzaga@uca.es>
.\" Traducción revisada por Miguel Pérez Ibars <mpi79470@alu.um.es> el 14-febrero-2005
.\"
.TH COPYSIGN 3  "10 agosto 2002" "GNU" "Manual del Programador de Linux"
.SH NOMBRE
copysign, copysignf, copysignl \- copian el signo de un número
.SH SINOPSIS
.nf
.B #include <math.h>
.sp
.BI "double copysign(double " x ", double " y );
.br
.BI "float copysignf(float " x ", float " y );
.br
.BI "long double copysignl(long double " x ", long double " y );
.fi
.SH OBSERVACIONES
Las funciones \fBcopysign()\fP pueden tratar un cero negativo como positivo.
.SH "CONFORME A"
C99, BSD 4.3.
Esta función está definida en IEC 559 (y en el apéndice con
funciones recomendadas de IEEE 754/IEEE 854).
.SH "VÉASE TAMBIÉN"
.BR signbit (3)