Is there any reason why people do that?

Question

Is there any reason why people do that?

if (lasta == 0) {
};
if (lasta == 1) {
Prl += 1;
};
if (lasta == 2) {
Prl += 2;
};
if (lasta == 3) {
Prl += 3;
};
if (lasta == 4) {
Prl += 4;
};
if (lasta == 5) {
Prl += 5;
};
if (lasta == 6) {
Prl += 6;
};
if (lasta == 7) {
Prl += 7;
};
if (lasta == 8) {
Prl += 8;
};
if (lasta == 9) {
Prl += 9;
};
if (lasta == 10) {
Prl += 10;
};

0

14.04.2021

11 ответов

21 просмотр

Nils Автор вопроса

Parra
you want to have fun with the branch predictor (?

I saw people doing that and I wonder why

0

14.04.2021

Pavel

Parra
you want to have fun with the branch predictor (?

Actually, compiler will likely optimize this to be one check and addition

0

15.04.2021

Idan

Yes , because they smart in thier own way , i am joking , that is simpler than for and dont add counter , if you want realy efficient program you will use that.

0

15.04.2021

Nils Автор вопроса

Idan
Yes , because they smart in thier own way , i am j...

?

0

16.04.2021

Idan

Nils
?

"?" ?

0

16.04.2021