📄 exp3c.c
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/* --------------------------------------------
exp3c.c
Understand overflow
----------------------------------------------- */
#define BUF_SIZE 40
int sineTable[BUF_SIZE]={
0x0000,0x000f,0x001e,0x002d,0x003a,0x0046,0x0050,0x0059,
0x005f,0x0062,0x0063,0x0062,0x005f,0x0059,0x0050,0x0046,
0x003a,0x002d,0x001e,0x000f,0x0000,0xfff1,0xffe2,0xffd3,
0xffc6,0xffba,0xffb0,0xffa7,0xffa1,0xff9e,0xff9d,0xff9e,
0xffa1,0xffa7,0xffb0,0xffba,0xffc6,0xffd3,0xffe2,0xfff1};
extern int ovftest(int, int *);
void main()
{
int ovrflow_flag;
int *ptr=sineTable;
while(1)
{
ovrflow_flag=0;
ovrflow_flag=ovftest(ovrflow_flag, ptr);
if (ovrflow_flag != 0)
ovrflow_flag=ovftest(ovrflow_flag, ptr);
}
}
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