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strlen-c
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This commit is contained in:
belfer 2024-05-16 09:21:42 +00:00
parent f6c5d6164b
commit 172dc1daf6
1 changed files with 3 additions and 49 deletions
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52
cpp/_rvmain.cpp
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@ -1,7 +1,6 @@
#include <stdint.h> #include <stdint.h>
char * ptr1 = "janek"; char * ptr1 = " Dominik P";
char * ptr2 = "kowalskii";
int strlen(char *s) int strlen(char *s)
{ {
@ -16,58 +15,13 @@ void strcpy(char *s, char *t)
while (*s++ = *t++); while (*s++ = *t++);
} }
#define ALLOCSIZE 10000
static char allocbuf[ALLOCSIZE];
static char *allocp = allocbuf;
char *alloc(int n)
{
if (n % 4 != 0) {
n += 4 - (n % 4);
}
if (allocbuf + ALLOCSIZE - allocp >= n) {
allocp += n;
return allocp - n;
} else
return 0;
}
int main() { int main() {
char * s = "mpabi";
uint8_t wynik =0; uint8_t wynik =0;
wynik = strlen (s); wynik = strlen (ptr);
asm("nop"); asm("nop");
char * p1 = alloc(strlen(ptr1));
strcpy (p1, ptr1);
asm("nop");
char * p2 = alloc(strlen(ptr2));
strcpy (p2, ptr2);
asm("nop");
struct point {
int16_t x;
int16_t y;
};
struct point * ptrS = (struct point *) alloc(sizeof(point));
ptrS->x=0x10;
ptrS->y=0x20;
asm("nop");
(*ptrS).y= strlen (p1)+ strlen(p2);
return 1;
} }