| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1993 Martin Birgmeier |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * You may redistribute unmodified or modified versions of this source |
| 6 | * code provided that the above copyright notice and this and the |
| 7 | * following conditions are retained. |
| 8 | * |
| 9 | * This software is provided ``as is'', and comes with no warranties |
| 10 | * of any kind. I shall in no event be liable for anything that happens |
| 11 | * to anyone/anything when using this software. |
| 12 | */ |
| 13 | |
| 14 | #include <sys/cdefs.h> |
| 15 | |
| 16 | #include "rand48.h" |
| 17 | |
| 18 | double |
| 19 | erand48(unsigned short xseed[3]) |
| 20 | { |
| Jim Huang | 7047810 | 2010-09-27 22:42:28 +0800 | [diff] [blame] | 21 | __dorand48(xseed); |
| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 22 | return ldexp((double) xseed[0], -48) + |
| 23 | ldexp((double) xseed[1], -32) + |
| 24 | ldexp((double) xseed[2], -16); |
| 25 | } |