fma() [12/17]

template<typename Tb , require_arithmetic_t< Tb > * = nullptr>

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

inline

The fused multiply-add function for a variable, value, and variable (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

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

Template Parameters

Ta	type of the first multiplicand
Tb	type of the second multiplicand
Tc	type of the summand

Parameters

x	First multiplicand.
y	Second multiplicand.
z	Summand.

Returns

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

Definition at line 85 of file fma.hpp.