NAME
IsNegative — Tell whether value is negative or not.
SYNOPSIS
IsNegative Value
DESCRIPTION
Return Value
1 The value is negative.
0 The value is not negative.
Arguments
ValueValue to check.
More Info
If a non-numeric value is put in then an error will be generated.

For information regarding exceptions / errors, see here.
EXAMPLES 
% IsNegative -1
1
% IsNegative 0
0
SEE ALSO
IsNonPositive, IsPositive
KEYWORDS
check, math, string, validation, verification