Attempts to convert a variable as a number.

Syntax

n = tonumber(v)

Argument

Name

Description

v

A variable of any type.

Outputs

Name

Description

n

A number or a matrix of numbers.

Example

Syntax

print(tonumber(true))

print(tonumber(1))

print(tonumber(0+1i))

print(tonumber([1]))

print(tonumber([0+1i]))

print(tonumber('hml1'))

print(tonumber('NaN'))

print(tonumber('Inf'))

print(tonumber('-Inf'))

Comments

n = tonumber(v) attempts to convert the input argument as a number.

If it is not possible, it returns a nil value.

See Also:

tostring