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Declaration:function Signum (a: double): integer;

The function Signum evaluates the sign of the floating point number a and returns either +1 or -1. Please note that the function Signum differs from the function Sign of the Delphi unit Math in the way how a zero argument is treated: Signum returns +1 if a equals 0 (Sign returns 0).

Example: The term "Signum (-3.3)" returns the value -1.

Last Update: 2017-Nov-22