Simply description restrict keyword

Question

I'm a junior C programmer.I don't understand the restrict keyword.Can you simply explain?Thanks for help.

`* restrict p`: Access to data pointed by `p` only occurs because of `p` or values derived from `p`. Is that simply enough? — chux - Reinstate Monica, Mar 15 '19 at 22:18
If you can access this site then you can also access Google. — machine_1, Mar 15 '19 at 22:35

score 0 · Answer 1 · answered Mar 15 '19 at 22:20

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The restrict keyword basically says the pointer is not overlapping with the other one (you need to have 2 pointers for this to work), that way the compiler can skip some checks and optimize your code better.

answered Mar 15 '19 at 22:20

Jiří Velek

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Do not need 2 pointers although that is certainly one way to see the usefulness of `restrict`. – chux - Reinstate Monica Mar 15 '19 at 22:27

Simply description restrict keyword

1 Answers1