/usr/include/libqhull_r/random_r.h is in libqhull-dev 2015.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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>-------------------------------</a><a name="TOP">-</a>
random.h
header file for random and utility routines
see qh-geom_r.htm and random_r.c
Copyright (c) 1993-2015 The Geometry Center.
$Id: //main/2015/qhull/src/libqhull_r/random_r.h#3 $$Change: 2062 $
$DateTime: 2016/01/17 13:13:18 $$Author: bbarber $
*/
#ifndef qhDEFrandom
#define qhDEFrandom 1
#include "libqhull_r.h"
/*============= prototypes in alphabetical order ======= */
int qh_argv_to_command(int argc, char *argv[], char* command, int max_size);
int qh_argv_to_command_size(int argc, char *argv[]);
int qh_rand(qhT *qh);
void qh_srand(qhT *qh, int seed);
realT qh_randomfactor(qhT *qh, realT scale, realT offset);
void qh_randommatrix(qhT *qh, realT *buffer, int dim, realT **row);
int qh_strtol(const char *s, char **endp);
double qh_strtod(const char *s, char **endp);
#endif /* qhDEFrandom */
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