projects / apple / icu.git / blame
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|---|---|---|
| f3c0d7a5 A |
1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html | |
| 4388f060 A |
3 | /* |
| 4 | ******************************************************************************* | |
| 5 | * Copyright (C) 2010, International Business Machines | |
| 6 | * Corporation and others. All Rights Reserved. | |
| 7 | ******************************************************************************* | |
| 8 | * file name: denseranges.h | |
| f3c0d7a5 | 9 | * encoding: UTF-8 |
| 4388f060 A |
10 | * tab size: 8 (not used) |
| 11 | * indentation:4 | |
| 12 | * | |
| 13 | * created on: 2010sep25 | |
| 14 | * created by: Markus W. Scherer | |
| 15 | * | |
| 16 | * Helper code for finding a small number of dense ranges. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef __DENSERANGES_H__ | |
| 20 | #define __DENSERANGES_H__ | |
| 21 | ||
| 22 | #include "unicode/utypes.h" | |
| 23 | ||
| 24 | /** | |
| 25 | * Does it make sense to write 1..capacity ranges? | |
| 26 | * Returns 0 if not, otherwise the number of ranges. | |
| 27 | * @param values Sorted array of signed-integer values. | |
| 28 | * @param length Number of values. | |
| 29 | * @param density Minimum average range density, in 256th. (0x100=100%=perfectly dense.) | |
| 30 | * Should be 0x80..0x100, must be 1..0x100. | |
| 31 | * @param ranges Output ranges array. | |
| 32 | * @param capacity Maximum number of ranges. | |
| 33 | * @return Minimum number of ranges (at most capacity) that have the desired density, | |
| 34 | * or 0 if that density cannot be achieved. | |
| 35 | */ | |
| 36 | U_CAPI int32_t U_EXPORT2 | |
| 37 | uprv_makeDenseRanges(const int32_t values[], int32_t length, | |
| 38 | int32_t density, | |
| 39 | int32_t ranges[][2], int32_t capacity); | |
| 40 | ||
| 41 | #endif // __DENSERANGES_H__ |