version 1.1.1.1, 2000/01/10 15:35:22 |
version 1.1.1.2, 2000/09/09 14:12:18 |
|
|
/* urandom.h -- define urandom returning a full unsigned long random value. |
/* urandom.h -- define urandom returning a full unsigned long random value. |
|
|
Copyright (C) 1995, 1996 Free Software Foundation, Inc. |
Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. |
|
|
This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
|
|
The GNU MP Library is free software; you can redistribute it and/or modify |
The GNU MP Library is free software; you can redistribute it and/or modify |
it under the terms of the GNU Library General Public License as published by |
it under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
option) any later version. |
option) any later version. |
|
|
The GNU MP Library is distributed in the hope that it will be useful, but |
The GNU MP Library is distributed in the hope that it will be useful, but |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
License for more details. |
License for more details. |
|
|
You should have received a copy of the GNU Library General Public License |
You should have received a copy of the GNU Lesser General Public License |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
|
|
#if defined (__hpux) || defined (__svr4__) || defined (__SVR4) |
#if defined (__hpux) || defined (__svr4__) || defined (__SVR4) |
/* HPUX lacks random(). */ |
/* HPUX lacks random(). */ |
static inline unsigned long |
static inline mp_limb_t |
urandom () |
urandom () |
{ |
{ |
return mrand48 (); |
return mrand48 (); |
|
|
#if defined (__alpha) && !defined (__URANDOM) |
#if defined (__alpha) && !defined (__URANDOM) |
/* DEC OSF/1 1.2 random() returns a double. */ |
/* DEC OSF/1 1.2 random() returns a double. */ |
long mrand48 (); |
long mrand48 (); |
static inline unsigned long |
static inline mp_limb_t |
urandom () |
urandom () |
{ |
{ |
return mrand48 () | (mrand48 () << 32); |
return mrand48 () | (mrand48 () << 32); |
|
|
#endif |
#endif |
|
|
#if BITS_PER_MP_LIMB == 32 && !defined (__URANDOM) |
#if BITS_PER_MP_LIMB == 32 && !defined (__URANDOM) |
|
#if defined (__cplusplus) |
|
extern "C" { |
|
#endif |
long random (); |
long random (); |
static inline unsigned long |
#if defined (__cplusplus) |
|
} |
|
#endif |
|
static inline mp_limb_t |
urandom () |
urandom () |
{ |
{ |
/* random() returns 31 bits, we want 32. */ |
/* random() returns 31 bits, we want 32. */ |
|
|
#endif |
#endif |
|
|
#if BITS_PER_MP_LIMB == 64 && !defined (__URANDOM) |
#if BITS_PER_MP_LIMB == 64 && !defined (__URANDOM) |
|
#if defined (__cplusplus) |
|
extern "C" { |
|
#endif |
long random (); |
long random (); |
static inline unsigned long |
#if defined (__cplusplus) |
|
} |
|
#endif |
|
static inline mp_limb_t |
urandom () |
urandom () |
{ |
{ |
/* random() returns 31 bits, we want 64. */ |
/* random() returns 31 bits, we want 64. */ |
return random () ^ (random () << 31) ^ (random () << 62); |
return random () ^ ((mp_limb_t) random () << 31) ^ ((mp_limb_t) random () << 62); |
} |
} |
#define __URANDOM |
#define __URANDOM |
#endif |
#endif |