IsNonPositive

Tests if a numeric entity is non-positive.

Syntax

• IsNonPositive(x[, ε])

  • x is a number, a vector, or a matrix

  • ε is a positive number

Description

If x is a number, a vector, or a matrix, then IsNonPositive(x, ε) returns true iff x is non-positive, all components of x are non-positive, or all entries of x are non-positive, respectively. Floating-point numbers are compared using epsilon ε. If omitted, a default (non-zero) value will be used for ε.

Examples

IsNonPositive(−IdentityMatrix(5))

true

See also

• IsZero

• IsNonZero

• IsPositive

• IsNegative

• IsNonNegative