66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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* $Id: misc.c,v 1.2 2005-05-16 14:14:34 bacon Exp $
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*/
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#include <xp/stx/misc.h>
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xp_stx_word_t xp_stx_strlen (const xp_stx_char_t* str)
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{
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const xp_stx_char_t* p = str;
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while (*p != XP_STX_CHAR('\0')) p++;
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return p - str;
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}
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int xp_stx_strcmp (const xp_stx_char_t* s1, const xp_stx_char_t* s2)
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{
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while (*s1 == *s2 && *s2 != XP_STX_CHAR('\0')) s1++, s2++;
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if (*s1 > *s2) return 1;
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else if (*s1 < *s2) return -1;
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return 0;
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}
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int xp_stx_strxcmp (
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const xp_stx_char_t* s1, xp_stx_word_t len, const xp_stx_char_t* s2)
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{
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const xp_stx_char_t* end = s1 + len;
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while (s1 < end && *s2 != XP_STX_CHAR('\0') && *s1 == *s2) {
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s1++; s2++;
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}
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if (s1 == end && *s2 == XP_STX_CHAR('\0')) return 0;
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if (*s1 == *s2) return (s1 < end)? 1: -1;
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return (*s1 > *s2)? 1: -1;
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}
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xp_stx_word_t xp_stx_strhash (const xp_stx_char_t* str)
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{
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xp_stx_word_t h = 0;
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xp_stx_byte_t* bp, * be;
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const xp_stx_char_t* p = str;
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while (*p != XP_STX_CHAR('\0')) {
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bp = (xp_stx_byte_t*)p;
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be = bp + xp_sizeof(xp_stx_char_t);
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while (bp < be) h = h * 31 + *bp++;
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p++;
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}
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return h;
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}
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xp_stx_word_t xp_stx_strxhash (const xp_stx_char_t* str, xp_stx_word_t len)
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{
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xp_stx_word_t h = 0;
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xp_stx_byte_t* bp, * be;
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const xp_stx_char_t* p = str, * end = str + len;
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while (p < end) {
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bp = (xp_stx_byte_t*)p;
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be = bp + xp_sizeof(xp_stx_char_t);
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while (bp < be) h = h * 31 + *bp++;
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p++;
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}
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return h;
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}
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