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72 theseven 1 
#include "global.h"
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#include "string.h"
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#include "libc/include/ctype.h"
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int strcasecmp(const char *s1, const char *s2)
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{
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    while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) {
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        s1++;
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        s2++;
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    }
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    return tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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}
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int strncasecmp(const char *s1, const char *s2, size_t n)
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{
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    int d = 0;
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    for(; n != 0; n--)
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    {
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        int c1 = tolower(*s1++);
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        int c2 = tolower(*s2++);
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        if((d = c1 - c2) != 0 || c2 == '\0')
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            break;
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    }
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    return d;
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}