Is single float assignment an atomic operation on the iPhone?

Posted by iter on Stack Overflow See other posts from Stack Overflow or by iter
Published on 2010-03-31T06:55:05Z Indexed on 2010/03/31 7:03 UTC
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Filed under:

iphone

|

multithreading

|

c

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objective-c

I assume that on a 32-bit device like the iPhone, assigning a short float is an atomic, thread-safe operation. I want to make sure it is. I have a C function that I want to call from an Objective-C thread, and I don't want to acquire a lock before calling it:

void setFloatValue(float value) {
    globalFloat = value;
}

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