FreeCalypso > hg > freecalypso-tools
annotate target-utils/libc/strcasecmp.c @ 295:79434b9de159
c1xx-calextr will need mkdir and librftab
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 18 Nov 2017 17:15:54 +0000 |
parents | 7fb62fc724dc |
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rev | line source |
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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 } |