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exp(+Number, -Result)
-Result is exp(+Number)
Evaluates the exponential function exp(Number) ("e to the power of Number")
and unifies the resulting value with Result.
- Number
- A number.
- Result
- Output: float or breal.
Description
Evaluates the exponential function exp(Number) ("e to the power of Number")
and unifies the resulting value with Result.
This predicate can be used as a function in arithmetic expressions.
In coroutining mode, if Number is uninstantiated, the call to exp/2 is
delayed until this variable is instantiated.
Modes and Determinism
Exceptions
- (4) instantiation fault
- Number is not instantiated (non-coroutining mode only).
- (24) number expected
- Number is not of a numeric type.
Examples
Result is exp(0.0). % gives Result = 1.0
Result is exp(-6). % gives Result = 0.00247875
See Also
is / 2