denseranges.h (1476B)
1 // © 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ******************************************************************************* 5 * Copyright (C) 2010, International Business Machines 6 * Corporation and others. All Rights Reserved. 7 ******************************************************************************* 8 * file name: denseranges.h 9 * encoding: UTF-8 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__