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# float(+Number, -Result)

Converts Number to float and unifies the resulting value with Result.

Number
  A number.
Result
  Output: float.

## Description

This predicate is used by the ECLiPSe compiler to expand evaluable arithmetic expressions. So the call to float(Number, Result) is equivalent to

        Result is float(Number)

which should be preferred for portability.

In coroutining mode, if Number is uninstantiated, the call to float/2 is delayed until this variable is instantiated.

### Modes and Determinism

- float(+, -) is det

### 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 float(1).		% gives Result = 1.0
        Result is float(-6).	% gives Result = -6.0

## See Also

is / 2