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The Maxima on-line user's manual

Algebra Calculator

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Signum

Function: signum (<x>) For numeric <x>, returns 0 if <x> is 0, otherwise returns -1 or +1 as <x> is less than or greater than 0, respectively.

plot2d(x^2*signum(x+1)+1, [x, -4, 4]);

If <x> is not numeric then a simplified but equivalent form is returned. For example, signum(-x) gives -signum(x).

(%o1)                                true
(%i2) 

Related Examples

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signum(0.048);

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signum(0.56);

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signum(3.2);

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signum

signum(0.56);

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signum

signum(0.56);

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