218     int32_t srcIndex = srcStart;  in toLower()  local
224             if (U_FAILURE(errorCode) || srcIndex >= srcLimit) {  in toLower()
228             uint8_t lead = src[srcIndex++];  in toLower()
232                     cpStart = srcIndex - 1;  in toLower()
237                 ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,  in toLower()
244                 prev = srcIndex;  in toLower()
248                 if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLimit &&  in toLower()
249                         (t = src[srcIndex] - 0x80) <= 0x3f) {  in toLower()
251                     ++srcIndex;  in toLower()
255                         cpStart = srcIndex - 2;  in toLower()
259                     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,  in toLower()
265                     prev = srcIndex;  in toLower()
269                     (srcIndex + 2) <= srcLimit &&  in toLower()
270                     U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {  in toLower()
272                 srcIndex += 2;  in toLower()
275             cpStart = --srcIndex;  in toLower()
276             U8_NEXT(src, srcIndex, srcLimit, c);  in toLower()
289             ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);  in toLower()
290             prev = srcIndex;  in toLower()
299             csc->cpLimit = srcIndex;  in toLower()
307             appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);  in toLower()
308             prev = srcIndex;  in toLower()
311     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,  in toLower()
326     int32_t srcIndex = 0;  in toUpper()  local
332             if (U_FAILURE(errorCode) || srcIndex >= srcLength) {  in toUpper()
336             uint8_t lead = src[srcIndex++];  in toUpper()
340                     cpStart = srcIndex - 1;  in toUpper()
345                 ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,  in toUpper()
352                 prev = srcIndex;  in toUpper()
356                 if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLength &&  in toUpper()
357                         (t = src[srcIndex] - 0x80) <= 0x3f) {  in toUpper()
359                     ++srcIndex;  in toUpper()
363                         cpStart = srcIndex - 2;  in toUpper()
367                     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,  in toUpper()
373                     prev = srcIndex;  in toUpper()
377                     (srcIndex + 2) <= srcLength &&  in toUpper()
378                     U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {  in toUpper()
380                 srcIndex += 2;  in toUpper()
383             cpStart = --srcIndex;  in toUpper()
384             U8_NEXT(src, srcIndex, srcLength, c);  in toUpper()
397             ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);  in toUpper()
398             prev = srcIndex;  in toUpper()
405         csc->cpLimit = srcIndex;  in toUpper()
411             appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);  in toUpper()
412             prev = srcIndex;  in toUpper()
415     ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,  in toUpper()