Last change
on this file since 535 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
864 bytes
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Line | |
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1 | /* |
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2 | FUNCTION |
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3 | <<strpbrk>>---find characters in string |
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4 | |
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5 | INDEX |
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6 | strpbrk |
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7 | |
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8 | SYNOPSIS |
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9 | #include <string.h> |
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10 | char *strpbrk(const char *<[s1]>, const char *<[s2]>); |
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11 | |
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12 | DESCRIPTION |
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13 | This function locates the first occurence in the string |
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14 | pointed to by <[s1]> of any character in string pointed to by |
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15 | <[s2]> (excluding the terminating null character). |
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16 | |
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17 | RETURNS |
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18 | <<strpbrk>> returns a pointer to the character found in <[s1]>, or a |
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19 | null pointer if no character from <[s2]> occurs in <[s1]>. |
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20 | |
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21 | PORTABILITY |
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22 | <<strpbrk>> requires no supporting OS subroutines. |
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23 | */ |
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24 | |
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25 | #include <string.h> |
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26 | |
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27 | char * |
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28 | strpbrk (const char *s1, |
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29 | const char *s2) |
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30 | { |
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31 | const char *c = s2; |
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32 | if (!*s1) |
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33 | return (char *) NULL; |
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34 | |
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35 | while (*s1) |
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36 | { |
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37 | for (c = s2; *c; c++) |
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38 | { |
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39 | if (*s1 == *c) |
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40 | break; |
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41 | } |
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42 | if (*c) |
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43 | break; |
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44 | s1++; |
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45 | } |
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46 | |
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47 | if (*c == '\0') |
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48 | s1 = NULL; |
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49 | |
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50 | return (char *) s1; |
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51 | } |
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