LDP: Update original to LDP v3.79

[linuxjm/LDP_man-pages.git] / original / man3 / copysign.3

diff --git a/original/man3/copysign.3 b/original/man3/copysign.3
index da80690..e354516 100644 (file)
--- a/original/man3/copysign.3
+++ b/original/man3/copysign.3
@@ -28,7 +28,7 @@
 .\"     386BSD man pages
 .\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
 .\" Modified 2002-08-10 by Walter Harms (walter.harms@informatik.uni-oldenburg.de)
-.TH COPYSIGN 3  2012-03-25 "GNU" "Linux Programmer's Manual"
+.TH COPYSIGN 3  2013-10-14 "GNU" "Linux Programmer's Manual"
 .SH NAME
 copysign, copysignf, copysignl \- copy sign of a number
 .SH SYNOPSIS
@@ -63,9 +63,15 @@ or
 .ad b
 .SH DESCRIPTION
 The
-.BR copysign ()
+.BR copysign (),
+.BR copysignf (),
+and
+.BR copysignl ()
 functions return a value whose absolute value matches
-that of \fIx\fP, but whose sign bit matches that of \fIy\fP.
+that of
+.IR x ,
+but whose sign bit matches that of
+.IR y .
 
 For example,
 .I "copysign(42.0,\ \-1.0)"
@@ -78,10 +84,22 @@ On success, these functions return a value whose magnitude is taken from
 and whose sign is taken from
 .IR y .
 
-If \fIx\fP is a NaN,
-a NaN with the sign bit of \fIy\fP is returned.
+If
+.I x
+is a NaN,
+a NaN with the sign bit of
+.I y
+is returned.
 .SH ERRORS
 No errors occur.
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR copysign (),
+.BR copysignf (),
+and
+.BR copysignl ()
+functions are thread-safe.
 .SH CONFORMING TO
 C99, POSIX.1-2001.
 .\" 4.3BSD.
@@ -89,8 +107,16 @@ This function is defined in IEC 559 (and the appendix with
 recommended functions in IEEE 754/IEEE 854).
 .SH NOTES
 On architectures where the floating-point formats are not IEEE 754 compliant,
-the
-.BR copysign ()
+these
 functions may treat a negative zero as positive.
 .SH SEE ALSO
 .BR signbit (3)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I man-pages
+project.
+A description of the project,
+information about reporting bugs,
+and the latest version of this page,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.