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| author | Selene ToyKeeper | 2015-10-18 19:15:24 -0600 |
|---|---|---|
| committer | Selene ToyKeeper | 2015-10-18 19:15:24 -0600 |
| commit | 0b7d9164e309577dd0c75d93e8216e33145fdce2 (patch) | |
| tree | 0b4eb48d1dcda163b55b7991e2b4aeec71f98869 /tk-random.h | |
| parent | merged trunk (diff) | |
| parent | Merged many updates from tiny25/bistro branch. (diff) | |
| download | anduril-0b7d9164e309577dd0c75d93e8216e33145fdce2.tar.gz anduril-0b7d9164e309577dd0c75d93e8216e33145fdce2.tar.bz2 anduril-0b7d9164e309577dd0c75d93e8216e33145fdce2.zip | |
merged trunk
Diffstat (limited to 'tk-random.h')
| -rw-r--r-- | tk-random.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tk-random.h b/tk-random.h new file mode 100644 index 0000000..d559659 --- /dev/null +++ b/tk-random.h @@ -0,0 +1,29 @@ +#ifndef TK_RANDOM_H +#define TK_RANDOM_H +/* + * Smaller, pseudo-random function(s). + * + * Copyright (C) 2015 Selene ToyKeeper + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +uint8_t pgm_rand() { + static uint16_t offset = 255; + offset = (offset + 1) & 0x3ff | 0x0100; + return pgm_read_byte(offset); +} + +#endif // TK_RANDOM_H |