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Negative

Status: Stable

documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

Description

Negative[x]
    gives True if x is a negative real number, and False if x is a
manifestly non-negative real number (including zero) or a non-real
complex number. For non-numeric x the expression is left unevaluated.
Negative is Listable, so it threads over lists element by element.

Examples

All examples below are verified against the current Mathilda build.

In[1]:= Negative[{1.6, 3/4, Pi, 0, -5, 1 + I, Sin[10^5]}]
Out[1]= {False, False, False, False, True, False, False}

In[2]:= Negative[{x, Sin[y]}]
Out[2]= {Negative[x], Negative[Sin[y]]}

In[3]:= Negative[1 - Pi]
Out[3]= True

Implementation notes

Attributes: Listable, Protected.

Implementation status

Stable — documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

References