31 lines
702 B
C++
31 lines
702 B
C++
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#include <ctype.h>
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#include <strings.h>
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int ffs(int i)
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{
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for (unsigned idx = 0; idx < sizeof(i) * 8; idx++)
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if (i & (1 << idx))
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return i + 1;
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return 0;
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}
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int strcasecmp(const char* s1, const char* s2)
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{
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const unsigned char* u1 = (unsigned char*)s1;
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const unsigned char* u2 = (unsigned char*)s2;
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for (; *u1 && *u2; u1++, u2++)
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if (tolower(*u1) != tolower(*u2))
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break;
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return tolower(*u1) - tolower(*u2);
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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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const unsigned char* u1 = (unsigned char*)s1;
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const unsigned char* u2 = (unsigned char*)s2;
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for (; --n && *u1 && *u2; u1++, u2++)
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if (tolower(*u1) != tolower(*u2))
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break;
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return tolower(*u1) - tolower(*u2);
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}
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