fma() [10/17]

var stan::math::fma ( const var &  x, const var &  y, const var &  z  )

inline

The fused multiply-add function for three variables (C99).

This function returns the product of the first two arguments plus the third argument.

The partial derivatives are

$\frac{\partial}{\partial x} (x * y) + z = y$, and

$\frac{\partial}{\partial y} (x * y) + z = x$, and

$\frac{\partial}{\partial z} (x * y) + z = 1$.

Parameters

x	First multiplicand.
y	Second multiplicand.
z	Summand.

Returns

Product of the multiplicands plus the summand, ($a * $b) + $c.

Definition at line 31 of file fma.hpp.