1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #define libpspp_misc_h 1
23 #define EPSILON (10 * DBL_EPSILON)
25 /* Divides nonnegative X by positive Y, rounding up. */
26 #define DIV_RND_UP(X, Y) (((X) + ((Y) - 1)) / (Y))
28 /* Returns nonnegative difference between {nonnegative X} and {the
29 least multiple of positive Y greater than or equal to X}. */
30 #define REM_RND_UP(X, Y) ((X) % (Y) ? (Y) - (X) % (Y) : 0)
32 /* Rounds X up to the next multiple of Y. */
33 #define ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y) * (Y))
35 /* Rounds X down to the previous multiple of Y. */
36 #define ROUND_DOWN(X, Y) ((X) / (Y) * (Y))
38 int intlog10 (unsigned);
40 /* Returns the square of X. */
47 /* Returns the cube of X. */
54 /* Returns the fourth power of X. */
63 /* Set *DEST to the lower of *DEST and SRC */
65 minimize (double *dest, double src)
72 /* Set *DEST to the greater of *DEST and SRC */
74 maximize (double *dest, double src)
80 #endif /* libpspp/misc.h */