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#include <u.h>
#include <libc.h>
enum {
Ts,
Tp,
Ta,
Tend
};
typedef struct Vec Vec;
struct Vec {
double x, y, z;
};
typedef double Veca[3];
vlong t[Tend], t0;
Vec
addvec(Vec a, Vec b)
{
return (Vec){a.x+b.x, a.y+b.y, a.z+b.z};
}
void
addvecp(Vec *a, Vec *b)
{
a->x += b->x;
a->y += b->y;
a->z += b->z;
}
void
addveca(Veca a, Veca b)
{
a[0] += b[0];
a[1] += b[1];
a[2] += b[2];
}
void
main()
{
Vec a = {5, 2, 19};
Vec b = {213, 30, -12};
Veca aa = {2, 9, -1};
Veca ab = {-10, 20, 30};
t0 = nsec();
a = addvec(a, b);
t[Ts] = nsec()-t0;
t0 = nsec();
addvecp(&a, &b);
t[Tp] = nsec()-t0;
t0 = nsec();
addveca(aa, ab);
t[Ta] = nsec()-t0;
print("struct\t%lldns\nstruct*\t%lldns\narray\t%lldns\n", t[Ts], t[Tp], t[Ta]);
exits(nil);
}
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