NumTraits Class Reference

Holds some data about the various numeric (i.e. scalar) types allowed by Eigen. More...

#include <NumTraits.h>

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Detailed Description

Holds some data about the various numeric (i.e. scalar) types allowed by Eigen.

Parameters:

T

the numeric type about which this class provides data. Recall that Eigen allows only the following types for T: int, float, double, std::complex<float>, std::complex<double>, and long double (especially useful to enforce x87 arithmetics when SSE is the default).

The provided data consists of:

• A typedef Real, giving the "real part" type of T. If T is already real, then Real is just a typedef to T. If T is std::complex<U> then Real is a typedef to U.
• A typedef FloatingPoint, giving the "floating-point type" of T. If T is int, then FloatingPoint is a typedef to double. Otherwise, FloatingPoint is a typedef to T.
• An enum value IsComplex. It is equal to 1 if T is a std::complex type, and to 0 otherwise.
• An enum HasFloatingPoint. It is equal to 0 if T is int, and to 1 otherwise.

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The documentation for this class was generated from the following file:

• NumTraits.h