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This file defines some useful machine constants, which are:
- Machine Constant:
REAL Machine::Epsilon
- Contains the machine precision.
On systems conforming the IEEE/ANSI-754-standard, this is approx. 2.2E-16.
- Machine Constant:
REAL Machine::MinPositive
- Contains the smallest positive machine number.
On systems conforming the IEEE/ANSI-754-standard, this is approx. 4.9E-324.
- Machine Constant:
REAL Machine::PosInfinity
- Contains a value equivalent to infinity or at least a very large positive number, if
infinity is not a valid
REAL value.
- Machine Constant:
REAL Machine::NegInfinity
- Contains a value equivalent to minus infinity or at least a very large negative number, if
infinity is not a valid
REAL value.
- Machine Constant:
REAL Machine::NaN
- Contains a value which is not a number, if NaN is a valid
REAL value.
Due to the automatic initialization of the machine constants given above,
the object file belonging to Constants.h must be linked to the executable
code. This is generally done automatically. If not, define in your program a global
variable as e.g.
Machine MachineAutomaticInit;
to initialize the machine constants.