217     int32_t srcIndex = srcStart;  in toLower()  local
223             if (U_FAILURE(errorCode) || srcIndex >= srcLimit) {  in toLower()
227             uint8_t lead = src[srcIndex++];  in toLower()
231                     cpStart = srcIndex - 1;  in toLower()
236                 ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,  in toLower()
243                 prev = srcIndex;  in toLower()
247                 if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLimit &&  in toLower()
248                         (t = src[srcIndex] - 0x80) <= 0x3f) {  in toLower()
250                     ++srcIndex;  in toLower()
254                         cpStart = srcIndex - 2;  in toLower()
258                     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,  in toLower()
264                     prev = srcIndex;  in toLower()
268                     (srcIndex + 2) <= srcLimit &&  in toLower()
269                     U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {  in toLower()
271                 srcIndex += 2;  in toLower()
274             cpStart = --srcIndex;  in toLower()
275             U8_NEXT(src, srcIndex, srcLimit, c);  in toLower()
288             ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);  in toLower()
289             prev = srcIndex;  in toLower()
298             csc->cpLimit = srcIndex;  in toLower()
306             appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);  in toLower()
307             prev = srcIndex;  in toLower()
310     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,  in toLower()
325     int32_t srcIndex = 0;  in toUpper()  local
331             if (U_FAILURE(errorCode) || srcIndex >= srcLength) {  in toUpper()
335             uint8_t lead = src[srcIndex++];  in toUpper()
339                     cpStart = srcIndex - 1;  in toUpper()
344                 ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,  in toUpper()
351                 prev = srcIndex;  in toUpper()
355                 if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLength &&  in toUpper()
356                         (t = src[srcIndex] - 0x80) <= 0x3f) {  in toUpper()
358                     ++srcIndex;  in toUpper()
362                         cpStart = srcIndex - 2;  in toUpper()
366                     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,  in toUpper()
372                     prev = srcIndex;  in toUpper()
376                     (srcIndex + 2) <= srcLength &&  in toUpper()
377                     U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {  in toUpper()
379                 srcIndex += 2;  in toUpper()
382             cpStart = --srcIndex;  in toUpper()
383             U8_NEXT(src, srcIndex, srcLength, c);  in toUpper()
396             ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);  in toUpper()
397             prev = srcIndex;  in toUpper()
404         csc->cpLimit = srcIndex;  in toUpper()
410             appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);  in toUpper()
411             prev = srcIndex;  in toUpper()
414     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,  in toUpper()