function stddev(const E1 &) reducing¶

template <input_expression E1, typename T = expression_value_type<E1>>
KFR_FUNCTION T stddev(const E1& x)

Computes the standard deviation of the given expression.

This function calculates the standard deviation of the input expression x. The input must be a sized expression.

Template parameters

T	The return type of the standard deviation.
E1	The type of the input expression.

Parameters

x	The input expression for which the standard deviation is computed.

Returns

The standard deviation of the input expression.