| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * floor, trunc, ceil |
| 3 | */ |
| 4 | /* |
| 5 | * MIPS floating point support |
| 6 | * Copyright (C) 1994-2000 Algorithmics Ltd. |
| 7 | * http://www.algor.co.uk |
| 8 | * |
| 9 | * ######################################################################## |
| 10 | * |
| 11 | * This program is free software; you can distribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License (Version 2) as |
| 13 | * published by the Free Software Foundation. |
| 14 | * |
| 15 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 18 | * for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 23 | * |
| 24 | * ######################################################################## |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | #include "ieee754.h" |
| 29 | |
| 30 | ieee754dp ieee754dp_floor(ieee754dp x) |
| 31 | { |
| 32 | ieee754dp i; |
| 33 | |
| 34 | if (ieee754dp_lt(ieee754dp_modf(x, &i), ieee754dp_zero(0))) |
| 35 | return ieee754dp_sub(i, ieee754dp_one(0)); |
| 36 | else |
| 37 | return i; |
| 38 | } |
| 39 | |
| 40 | ieee754dp ieee754dp_ceil(ieee754dp x) |
| 41 | { |
| 42 | ieee754dp i; |
| 43 | |
| 44 | if (ieee754dp_gt(ieee754dp_modf(x, &i), ieee754dp_zero(0))) |
| 45 | return ieee754dp_add(i, ieee754dp_one(0)); |
| 46 | else |
| 47 | return i; |
| 48 | } |
| 49 | |
| 50 | ieee754dp ieee754dp_trunc(ieee754dp x) |
| 51 | { |
| 52 | ieee754dp i; |
| 53 | |
| 54 | (void) ieee754dp_modf(x, &i); |
| 55 | return i; |
| 56 | } |