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#include <stdio.h>
#include <stdlib.h>
#include <ttyrec.h>
#include "sys/error.h"
static long long ax, bx;
static struct timeval a, b, c;
static void conv(long long x, struct timeval *t)
{
t->tv_sec=x/1000000;
if (x<0 && x%1000000)
t->tv_sec--;
t->tv_usec=x-t->tv_sec*1000000;
}
static void gen(void)
{
ax=rand()%10000000-2000000;
conv(ax, &a);
bx=rand()%10000000-2000000;
conv(bx, &b);
}
static void cmp(long long cx, const char *opname)
{
conv(cx, &c);
if (a.tv_sec!=c.tv_sec || labs(a.tv_usec-c.tv_usec)>1) // round-off error
die("Mismatch in %s\n", opname);
}
int main(void)
{
int i;
for (i=0;i<1000;i++)
{
gen();
//printf("%3d:%09u + %3d:%09u = ", a.tv_sec, a.tv_usec, b.tv_sec, b.tv_usec);
tadd(a, b);
//printf("%3d:%09u\n", a.tv_sec, a.tv_usec);
cmp(ax+bx, "tadd");
}
for (i=0;i<1000;i++)
{
gen();
tsub(a, b);
cmp(ax-bx, "tsub");
}
for (i=0;i<1000;i++)
{
gen();
b.tv_usec/=100;
//printf("%3d:%06u * %4d = ", a.tv_sec, a.tv_usec, b.tv_usec);
tmul1000(a, b.tv_usec);
//printf("%3d:%06u vs %lld\n", a.tv_sec, a.tv_usec, ax*b.tv_usec/1000);
cmp(ax*b.tv_usec/1000, "tmul1000");
}
for (i=0;i<1000;i++)
{
gen();
b.tv_usec/=100;
if (b.tv_usec<=0)
continue;
//printf("%3d:%06u / %4d = ", a.tv_sec, a.tv_usec, b.tv_usec);
tdiv1000(a, b.tv_usec);
//printf("%3d:%06u vs %lld\n", a.tv_sec, a.tv_usec, ax*(long long)1000/b.tv_usec);
cmp(ax*(long long)1000/b.tv_usec, "tdiv1000");
}
return 0;
}
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