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strspn.c
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C/C++ Source or Header
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1994-11-29
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314 b
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17 lines
/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
#include <string.h>
size_t
strspn(const char *s1, const char *s2)
{
const char *p = s1, *spanp;
char c, sc;
cont:
c = *p++;
for (spanp = s2; (sc = *spanp++) != 0;)
if (sc == c)
goto cont;
return (p - 1 - s1);
}