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annotate target-utils/libc/strcasecmp.c @ 964:a96cb97b66a2

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ringtools/imy: fix duplicate definition of tdma_durations[] The bug was reported by Vadim Yanitskiy <fixeria@osmocom.org>, although the present fix is slightly different from the contributed patch: because main.c doesn't need this tdma_durations[] array at all, let's simply remove the reference to this array from main.c rather than turn it into an extern. I no longer remember my original thought flow that resulted (by mistake) in tdma_durations[] being multiply defined in main.c and durations.c. My intent might have been to define all globals in main.c and have the reference in durations.c be an extern - and I missed that extern - but without clear memory, I have no certainty. In any case, having this data array defined in the same module that fills it (durations.c) is sensible, so let's make it the new way.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 31 Aug 2023 19:38:18 +0000
parents 7fb62fc724dc
children
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1 #include <sys/types.h>
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2
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3 /*
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4 * This array is designed for mapping upper and lower case letter
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5 * together for a case independent comparison. The mappings are
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6 * based upon ascii character sequences.
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7 */
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8 static const u_char charmap[] = {
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9 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
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10 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
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11 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
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12 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
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13 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
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14 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
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15 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
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16 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
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17 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
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18 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
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19 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
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20 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
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21 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
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22 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
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23 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
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24 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
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25 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
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26 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
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27 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
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28 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
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29 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
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30 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
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31 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
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32 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
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33 '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
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34 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
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35 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
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36 '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
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37 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
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38 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
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39 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
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40 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
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41 };
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42
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43 strcasecmp(s1, s2)
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44 const char *s1, *s2;
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45 {
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46 register const u_char *us1 = (const u_char *)s1,
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47 *us2 = (const u_char *)s2;
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48
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49 while (charmap[*us1] == charmap[*us2++])
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50 if (*us1++ == '\0')
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51 return(0);
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52 return(charmap[*us1] - charmap[*--us2]);
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53 }
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54
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55 strncasecmp(s1, s2, n)
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56 const char *s1, *s2;
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57 register int n;
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58 {
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59 register const u_char *us1 = (const u_char *)s1,
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60 *us2 = (const u_char *)s2;
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61
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62 while (--n >= 0 && charmap[*us1] == charmap[*us2++])
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63 if (*us1++ == '\0')
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64 return(0);
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65 return(n < 0 ? 0 : charmap[*us1] - charmap[*--us2]);
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66 }