mustBeNegative

Checks that value is negative or raise an error.

Syntax

• mustBeNegative(var)
• mustBeNegative(var, argPosition)
• C++: void mustBeNegative(const ArrayOfVector& args, int argPosition)

Input argument

• var - a variable: all supported types and classes that implement isnumeric, islogical, all, isreal, and lt methods.
• argPosition - a positive integer value: Position of input argument.

Description

mustBeNegative checks that value is negative or raise an error.

Example

mustBeNegative(-1)
mustBeNegative(1)

See also

mustBePositive.

History

Author

Allan CORNET