Sign0

Returns the sign of a number.

sign0(Real)

Description

sign0(Real)

Given a real number $x$ different from zero, returns its sign: $text sign0 end text left parenthesis x right parenthesis equals open curly brackets table attributes columnalign left end attributes row cell 1 comma space text if end text space x greater than 0 end cell row cell negative 1 comma space text if end text space x less than 0 end cell end table close$

Sign, Positive?, Negative?

Sign0

Syntax

Description

sign0(Real)

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