diff options
Diffstat (limited to 'libc/stdlib/nrand48_r.c')
-rw-r--r-- | libc/stdlib/nrand48_r.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libc/stdlib/nrand48_r.c b/libc/stdlib/nrand48_r.c new file mode 100644 index 000000000..dd2eed8f1 --- /dev/null +++ b/libc/stdlib/nrand48_r.c @@ -0,0 +1,38 @@ +/* Copyright (C) 1995, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu <mailto:drepper@gnu.ai.mit.edu>>, August 1995. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stdlib.h> + +int nrand48_r (xsubi, buffer, result) + unsigned short int xsubi[3]; + struct drand48_data *buffer; + long int *result; +{ + /* Compute next state. */ + if (__drand48_iterate (xsubi, buffer) < 0) + return -1; + + /* Store the result. */ + if (sizeof (unsigned short int) == 2) + *result = xsubi[2] << 15 | xsubi[1] >> 1; + else + *result = xsubi[2] >> 1; + + return 0; +} |