fma() [13/17]

template<typename Tb , typename Tc , require_all_arithmetic_t< Tb, Tc > * = nullptr>

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

inline

The fused multiply-add function for a variable and two values (C99).

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

The double-based version ::fma(double, double, double) is defined in <cmath>.

The derivative is

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

Template Parameters

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 114 of file fma.hpp.