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+.\" Copyright 2003 Walter Harms, 2004 Andries Brouwer <aeb@cwi.nl>.
+.\"
+.\" Permission is granted to make and distribute verbatim copies of this
+.\" manual provided the copyright notice and this permission notice are
+.\" preserved on all copies.
+.\"
+.\" Permission is granted to copy and distribute modified versions of this
+.\" manual under the conditions for verbatim copying, provided that the
+.\" entire resulting derived work is distributed under the terms of a
+.\" permission notice identical to this one.
+.\" 
+.\" Since the Linux kernel and libraries are constantly changing, this
+.\" manual page may be incorrect or out-of-date.  The author(s) assume no
+.\" responsibility for errors or omissions, or for damages resulting from
+.\" the use of the information contained herein.  The author(s) may not
+.\" have taken the same level of care in the production of this manual,
+.\" which is licensed free of charge, as they might when working
+.\" professionally.
+.\" 
+.\" Formatted or processed versions of this manual, if unaccompanied by
+.\" the source, must acknowledge the copyright and authors of this work.
+.\"
+.\" Created 2004-10-31. Text taken from a page by Walter Harms, 2003-09-08
+.\"
+.TH DRAND48_R 3 2004-10-31 "GNU" "Linux Programmer's Manual"
+.SH NAME
+drand48_r, erand48_r, lrand48_r, nrand48_r, mrand48_r, jrand48_r, 
+srand48_r, seed48_r, lcong48_r
+\- generate uniformly distributed pseudo-random numbers reentrantly
+.SH SYNOPSIS
+.nf
+.B #include <stdlib.h>
+.sp
+.BI "int drand48_r(struct drand48_data *" buffer ", double *" result );
+.sp
+.BI "int erand48_r(unsigned short " xsubi [3] ","
+.br
+.BI "              struct drand48_data *"buffer ", double *" result ");"
+.sp
+.BI "int lrand48_r(struct drand48_data *" buffer ", long int *" result );
+.sp
+.BI "int nrand48_r(unsigned short int " xsubi[3] "," 
+.br
+.BI "              struct drand48_data *"buffer ", long int *" result ");"
+.sp
+.BI "int mrand48_r(struct drand48_data *" buffer ",long int *" result ");"
+.sp
+.BI "int jrand48_r(unsigned short int " xsubi[3] ","
+.br
+.BI "              struct drand48_data *" buffer ", long int *" result ");"
+.sp
+.BI "int srand48_r(long int " seedval ", struct drand48_data *" buffer ");"
+.sp
+.BI "int seed48_r(unsigned short int " seed16v[3] "," 
+.br
+.BI "             struct drand48_data *" buffer ");"
+.sp
+.BI "int lcong48_r(unsigned short int " param[7] ","
+.br
+.BI "              struct drand48_data *" buffer ");"
+.fi
+.SH DESCRIPTION
+These functions are the reentrant analogs of the functions described in
+.BR drand48 (3).
+Instead of modifying the global random generator state, they use
+the supplied data
+.IR buffer .
+
+Before the first use, this struct must be initialized, e.g.
+by filling it with zeroes, or by calling one of the functions
+.BR srand48_r() ,
+.BR seed48_r() ,
+or
+.BR lcong48_r() .
+.SH "RETURN VALUE"
+The return value is 0.
+.SH "CONFORMING TO"
+These functions are GNU extensions and are not portable.
+.SH "SEE ALSO"
+.BR drand48 (3),
+.BR rand (3),
+.BR random (3)