Computes the product of the first and second specified arguments, then adds the third specified argument to the result; the entire computation is performed as a single operation.
The first floating-point argument.
The second floating-point argument.
The third floating-point argument.
The result of the expression (_X * _Y) + _Z. The entire computation is performed as a single operation; that is, the sub-expressions are calculated to infinite precision, and only the final result is rounded.