48 lines
974 B
C
48 lines
974 B
C
#include <stdint.h>
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#include <stddef.h>
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#include "hal.h"
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void *hal_memset(void *p, int c, size_t n) {
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char *cp = p;
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for (size_t i = 0; i < n; i++) cp[i] = c;
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return p;
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}
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void *hal_memcpy(void *dst, const void *src, size_t n) {
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char *a = dst;
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const char *b = src;
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for (size_t i = 0; i < n; i++) a[i] = b[i];
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return dst;
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}
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size_t hal_strlen(char *s) {
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char *s2;
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for (s2 = s; *s2; ++s2);
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return (s2 - s);
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}
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// https://aticleworld.com/memcmp-in-c/
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int hal_memcmp(const void *s1, const void *s2, int len)
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{
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unsigned char *p = s1;
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unsigned char *q = s2;
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int charCompareStatus = 0;
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//If both pointer pointing same memory block
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if (s1 == s2)
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{
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return charCompareStatus;
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}
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while (len > 0)
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{
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if (*p != *q)
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{ //compare the mismatching character
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charCompareStatus = (*p >*q)?1:-1;
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break;
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}
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len--;
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p++;
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q++;
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}
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return charCompareStatus;
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}
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