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42 lines
1.4 KiB
42 lines
1.4 KiB
4 months ago
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// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2010, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: denseranges.h
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* encoding: UTF-8
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2010sep25
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* created by: Markus W. Scherer
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*
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* Helper code for finding a small number of dense ranges.
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*/
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#ifndef __DENSERANGES_H__
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#define __DENSERANGES_H__
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#include "unicode/utypes.h"
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/**
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* Does it make sense to write 1..capacity ranges?
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* Returns 0 if not, otherwise the number of ranges.
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* @param values Sorted array of signed-integer values.
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* @param length Number of values.
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* @param density Minimum average range density, in 256th. (0x100=100%=perfectly dense.)
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* Should be 0x80..0x100, must be 1..0x100.
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* @param ranges Output ranges array.
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* @param capacity Maximum number of ranges.
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* @return Minimum number of ranges (at most capacity) that have the desired density,
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* or 0 if that density cannot be achieved.
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*/
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U_CAPI int32_t U_EXPORT2
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uprv_makeDenseRanges(const int32_t values[], int32_t length,
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int32_t density,
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int32_t ranges[][2], int32_t capacity);
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#endif // __DENSERANGES_H__
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