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
|
File size:
864 bytes
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Rev | Line | |
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[444] | 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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