diff options
Diffstat (limited to 'src/sysdep.c')
| -rw-r--r-- | src/sysdep.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/src/sysdep.c b/src/sysdep.c index ca7de4f54b..43f50cdb0a 100644 --- a/src/sysdep.c +++ b/src/sysdep.c @@ -1760,23 +1760,14 @@ seed_random (long int arg) * Build a full Emacs-sized word out of whatever we've got. * This suffices even for a 64-bit architecture with a 15-bit rand. */ -long +EMACS_INT get_random (void) { - long val = random (); -#if VALBITS > RAND_BITS - val = (val << RAND_BITS) ^ random (); -#if VALBITS > 2*RAND_BITS - val = (val << RAND_BITS) ^ random (); -#if VALBITS > 3*RAND_BITS - val = (val << RAND_BITS) ^ random (); -#if VALBITS > 4*RAND_BITS - val = (val << RAND_BITS) ^ random (); -#endif /* need at least 5 */ -#endif /* need at least 4 */ -#endif /* need at least 3 */ -#endif /* need at least 2 */ - return val & ((1L << VALBITS) - 1); + EMACS_UINT val = 0; + int i; + for (i = 0; i < (VALBITS + RAND_BITS - 1) / RAND_BITS; i++) + val = (val << RAND_BITS) ^ random (); + return val & (((EMACS_INT) 1 << VALBITS) - 1); } #ifndef HAVE_STRERROR |