# Iterated Operators

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## mXparser - built-in Iterated Operators

Key word Category Description Example Since
sum Iterated Operator Summation operator (SIGMA) sum(i, from, to, f(i,...) <,BY>) sum(i, 1, 10, i^2), sum(i, 1, 10, i^2, 0.5) 1.0
prod Iterated Operator Product operator (PI) prod(i, from, to, f(i,...) <,BY>) prod(i, 1, 10, i^2), prod(i, 1, 10, i^2, 0.5) 1.0
avg Iterated Operator Average operator avg(i, from, to, f(i,...) <,BY>) avg(i, 1, 10, i^2), avg(i, 1, 10, i^2, 0.2) 2.4
vari Iterated Operator Bias-corrected sample variance operator vari(i, from, to, f(i,...) <,BY>) vari(i, 1, 10, i^2), vari(i, 1, 10, i^2, 0.5) 2.4
stdi Iterated Operator Bias-corrected sample standard deviation operator stdi(i, from, to, f(i,...) <,BY>) stdi(i, 1, 10, i^2), stdi(i, 1, 10, i^2, 0.01) 2.4
mini Iterated Operator Minimum value mini(i, from, to, f(i,...) <,BY>) mini(i, 1, 10, i^2), mini(i, 1, 10, i^2, 0.3) 2.4
maxi Iterated Operator Maximum value maxi(i, from, to, f(i,...) <,BY>) maxi(i, 1, 10, i^2), maxi(i, 1, 10, i^2, 0.4) 2.4

as of 2017-04-05

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Best regards,

Mariusz Gromada