PICO-8 Wiki
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abs( num )
Returns the absolute value of a number.
num
The number.

return-value
The absolute value of num.

The absolute value of a number is a number with the same magnitude, ignoring the sign.

Examples[]

print(abs(3.1))   -- 3.1

print(abs(-3.1))  -- 3.1

print(abs(0))     -- 0

See also[]

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