diff options
Diffstat (limited to 'stdlib/random_r.c')
| -rw-r--r-- | stdlib/random_r.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/stdlib/random_r.c b/stdlib/random_r.c index 09677e6077..5e564a737d 100644 --- a/stdlib/random_r.c +++ b/stdlib/random_r.c @@ -1,5 +1,5 @@ -/* - Copyright (C) 1995 Free Software Foundation +/* + Copyright (C) 1995, 2005 Free Software Foundation The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -32,7 +32,7 @@ 4. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. - + THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -236,14 +236,20 @@ __initstate_r (seed, arg_state, n, buf) size_t n; struct random_data *buf; { - int type; - int degree; - int separation; - int32_t *state; - if (buf == NULL) goto fail; + int32_t *old_state = buf->state; + if (old_state != NULL) + { + int old_type = buf->rand_type; + if (old_type == TYPE_0) + old_state[-1] = TYPE_0; + else + old_state[-1] = (MAX_TYPES * (buf->rptr - old_state)) + old_type; + } + + int type; if (n >= BREAK_3) type = n < BREAK_4 ? TYPE_3 : TYPE_4; else if (n < BREAK_1) @@ -258,13 +264,13 @@ __initstate_r (seed, arg_state, n, buf) else type = n < BREAK_2 ? TYPE_1 : TYPE_2; - degree = random_poly_info.degrees[type]; - separation = random_poly_info.seps[type]; + int degree = random_poly_info.degrees[type]; + int separation = random_poly_info.seps[type]; buf->rand_type = type; buf->rand_sep = separation; buf->rand_deg = degree; - state = &((int32_t *) arg_state)[1]; /* First location. */ + int32_t *state = &((int32_t *) arg_state)[1]; /* First location. */ /* Must set END_PTR before srandom. */ buf->end_ptr = &state[degree]; |