what is the meaning of this statement (chaIntVal >= 0x10 ? chaIntVal : chaIntVal | 0x60)

Question

Hi Please somebody can explain me the meaning of this conditional statement? This is a java code.

(chaIntVal >= 0x10 ? chaIntVal  : chaIntVal | 0x60)

Well it's just a conditional operator expression. It's not a statement in its own right. Which part of it are you finding hard to understand? Is it the bitwise `or`? — Jon Skeet, Nov 29 '13 at 08:30
possible duplicate of [What is the Java ?: operator called and what does it do?](http://stackoverflow.com/questions/798545/what-is-the-java-operator-called-and-what-does-it-do) — AJ., Nov 29 '13 at 08:32
@user3022123: Then I don't understand how the accepted answer has helped you, as that's only explained the conditional operator part... — Jon Skeet, Nov 29 '13 at 09:20
@JonSkeet, It was hard to find exact answer helped me. But the accepted answer helped me to understand and with your answer too. So how can I mark yours as well as the answer? — user3022123, Nov 30 '13 at 14:04
You can't - I didn't answer, as your question didn't make it clear what you didn't understand. — Jon Skeet, Nov 30 '13 at 14:12

score 2 · Accepted Answer · answered Nov 29 '13 at 08:30

2

It means:

int res;
if(chaIntVal >= 0x10) {
    res = chaIntVal;
} else {
    res = chaIntVal | 0x60;   // binary or
}

answered Nov 29 '13 at 08:30

Jean Logeart

score 1 · Answer 2 · answered Nov 29 '13 at 08:29

1

It is a ternary operator which means this.

condition ? value_if_true : value_if_false;

It is almost equivalent to

if(condition){
    // when true do this
}else{
    // when false do this
}

answered Nov 29 '13 at 08:29

Rahul

score 1 · Answer 3 · answered Nov 29 '13 at 08:34

1

This expression returns chaIntVal as is if chaIntVal > 16; otherwise it will set bits 5 and 6 to 1 of chaIntVal (binary OR http://www.xcprod.com/titan/XCSB-DOC/binary_or.html) and returns it.

answered Nov 29 '13 at 08:34

Evgeniy Dorofeev

score 0 · Answer 4 · answered Nov 29 '13 at 08:37

0

If the high bits after the 4 low bits of the value are not set (value in range 0-15), do set bits x11x xxxx.

answered Nov 29 '13 at 08:37

Joop Eggen

4 Answers4