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72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
//-----------------------------------------------------------------------------
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// Jonathan Westhues, Sept 2005
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Common string.h functions
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//-----------------------------------------------------------------------------
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#include "string.h"
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#include <stdint.h>
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void *memcpy(void *dest, const void *src, int len)
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{
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uint8_t *d = dest;
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const uint8_t *s = src;
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while((len--) > 0) {
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*d = *s;
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d++;
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s++;
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}
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return dest;
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}
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void *memset(void *dest, int c, int len)
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{
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uint8_t *d = dest;
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while((len--) > 0) {
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*d = c;
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d++;
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}
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return dest;
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}
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int memcmp(const void *av, const void *bv, int len)
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{
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const uint8_t *a = av;
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const uint8_t *b = bv;
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while((len--) > 0) {
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if(*a != *b) {
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return *a - *b;
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}
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a++;
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b++;
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}
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return 0;
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}
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int strlen(const char *str)
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{
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int l = 0;
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while(*str) {
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l++;
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str++;
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}
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return l;
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}
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char* strncat(char *dest, const char *src, unsigned int n)
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{
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unsigned int dest_len = strlen(dest);
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unsigned int i;
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for (i = 0 ; i < n && src[i] != '\0' ; i++)
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dest[dest_len + i] = src[i];
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dest[dest_len + i] = '\0';
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return dest;
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}
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