Algosim documentation: RealNumber

RealNumber

Converts an object to a real number.

Syntax

Description

If X is any complex number with zero imaginary part, then RealNumber(X) returns X as an object of type RealNumber; if the imaginary part is non-zero, an error is returned.

If X is a vector, matrix, list, set, or structure – in each case containing only a single element which is a number with zero imaginary part – then this number is returned in the form of a real number object.

If X is a string, an attempt is made to parse it as a real number. If successful, the parsed number is returned.

In all other cases, RealNumber(X) returns an error.

Examples

'((n ≔ 687), (x ≔ RealNumber(n))) @ type
integer
real number

RealNumber(❨❨5, 9, 3, 1❩❩ ⋅ ❨❨7❩, ❨2❩, ❨4❩, ❨0❩❩)
65
RealNumber(❨❨5, 9, 3, 1❩❩ ⋅ ❨❨7❩, ❨2❩, ❨4❩, ❨i❩❩)
failure
Complex number 65 + i cannot be converted to a real number.
Call stack: RealNumber
'("3.14", "−5E6", ".57") @ RealNumber
3.14
−5000000
0.57

See also