NumTraits Class Reference
Holds some data about the various numeric (i.e. scalar) types allowed by Eigen.
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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.
The documentation for this class was generated from the following file: