reinterpret_cast cast cost

Asked 2010-08-26T12:57:01.157

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My understanding is that C++ reinterpret_cast and C pointer cast is a just a compile-time functionality and that it has no performance cost at all.

Is this true?

c++ c casting reinterpret-cast

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reinterpret_cast does not incur runtime cost.. however you have to be careful, as every use of reinterpret_cast is implementation defined. For example, it is possible reinterpreting a char array as an int array could cause the target architecture to throw an interrupt, because different types may have different alignment rules.

Get correct first, then worry about efficiency.

answered 2010-08-26T13:06:40.397

reinterpret_cast cast cost

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