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      1 /*
      2  * Copyright (C) 2015, International Business Machines
      3  * Corporation and others.  All Rights Reserved.
      4  *
      5  * file name: digitinterval.cpp
      6  */
      7 
      8 #include "unicode/utypes.h"
      9 
     10 #include "digitinterval.h"
     11 
     12 U_NAMESPACE_BEGIN
     13 
     14 void DigitInterval::expandToContain(const DigitInterval &rhs) {
     15     if (fSmallestInclusive > rhs.fSmallestInclusive) {
     16         fSmallestInclusive = rhs.fSmallestInclusive;
     17     }
     18     if (fLargestExclusive < rhs.fLargestExclusive) {
     19         fLargestExclusive = rhs.fLargestExclusive;
     20     }
     21 }
     22 
     23 void DigitInterval::shrinkToFitWithin(const DigitInterval &rhs) {
     24     if (fSmallestInclusive < rhs.fSmallestInclusive) {
     25         fSmallestInclusive = rhs.fSmallestInclusive;
     26     }
     27     if (fLargestExclusive > rhs.fLargestExclusive) {
     28         fLargestExclusive = rhs.fLargestExclusive;
     29     }
     30 }
     31 
     32 void DigitInterval::setIntDigitCount(int32_t count) {
     33     fLargestExclusive = count < 0 ? INT32_MAX : count;
     34 }
     35 
     36 void DigitInterval::setFracDigitCount(int32_t count) {
     37     fSmallestInclusive = count < 0 ? INT32_MIN : -count;
     38 }
     39 
     40 void DigitInterval::expandToContainDigit(int32_t digitExponent) {
     41   if (fLargestExclusive <= digitExponent) {
     42       fLargestExclusive = digitExponent + 1;
     43   } else if (fSmallestInclusive > digitExponent) {
     44       fSmallestInclusive = digitExponent;
     45   }
     46 }
     47 
     48 UBool DigitInterval::contains(int32_t x) const {
     49     return (x < fLargestExclusive && x >= fSmallestInclusive);
     50 }
     51 
     52 
     53 U_NAMESPACE_END
     54 
     55