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Praxeolitic
Praxeolitic

Reputation: 24039

What floating point implementation details are required by the standard?

Exactly what floating point implementation details are required by the C++11 standard?

Is some version of IEEE 754 required by the C++ standard?

Where is this stated in the C++ standard?

Upvotes: 0

Views: 93

Answers (1)

Columbo
Columbo

Reputation: 60979

The standard does not require any particular floating point representation. [basic.fundamental]/8:

The value representation of floating-point types is implementation-defined.

However, as IEEE 754 is very common, support can be checked via std::numeric_limits<>::is_iec559.

Upvotes: 3

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